model curriculumj_q6707_gemstone... · model curriculum gemstone processor (electives: pre-shaping...

Gemstone Processor

MODEL CURRICULUM

Gemstone Processor (Electives: Pre-shaping / Polishing /

Facet Making / Girdle Polishing)

SECTOR:

SUB-SECTOR:

OCCUPATION:

REF ID:

NSQF LEVEL:

GEM & JEWELLERY

GEMSTONE PROCESSING

SHAPING, FACETING AND POLISHING

G&J/Q6707, VERSION 1.0

3

Gemstone Processor

Gemstone Processor

1.Curriculum 5

2.TrainerPrerequisites 16

3.Annexure:AssessmentCriteria 17

TABLE OF CONTENTS

1. Curriculum 01

2. Trainer Prerequisites 14

3. Annexure: Assessment Criteria 15

Gemstone Processor

Gemstone Processor CURRICULUM / SYLLABUS

This program is aimed at training candidates for the job of a “Gemstone Processor” in the “Gem and

Jewellery” Sector/Industry and aims at building the following key competencies amongst the learners.

Program Name Gemstone Processor (Electives: Pre-shaping / Polishing / Facet Making / Girdle Polishing)

Qualification Pack Name & Reference ID

G&J/Q6707

Version No. 1.0 Version Update Date 08/03/2018

Prerequisites to Training 8th Standard

Training Outcomes

After completing this programme, the participants will be able to:

• Identify the different types of gemstones and their physical

characteristics

• Evaluate the plan to align and dop the stones

• Apply interpersonal skills while communicating with

colleagues

• Comply with health and safety guidelines of the

organisation

After completing Elective 1, the participants will be able to:

• Demonstrate how to pre-shape/pre-form the gemstone as

per the plan

• Apply appropriate technique to operate a tumble machine


• Manage proper polishing of facets according to the type,

shape and size of the stones


• Demonstrate how to cut facets according to the shape,

colour, brilliance and metered edges of the stones


• Demonstrate the process of polishing the girdles of

faceted gemstones using an appropriate angle

Gemstone Processor

This course encompasses 03 out of 03 Compulsory National Occupational Standards (NOS) and

05 out of 05 Elective National Occupational Standards (NOS) of “Gemstone Processor (Electives:

Pre-shaping / Polishing / Facet Making / Girdle Polishing)” Qualification Pack issued by “Gem and

Jewellery Skill Council of India”.

COMPULSORY NOS:

Sr. No.

Module Key Learning Outcomes Equipment Required

1. Introduction to Role of Gemstone Processor

Theory Duration (hh:mm) 20:00

Practical Duration (hh:mm) 10:00

Corresponding NOS Code Bridge Module

• Identify the role and responsibilities of a gemstone processor

• Define gemmology and properties of different types of stones

• Identify different types of stones such as precious, semi-precious and synthetic gemstones

• Identify origin of precious stones to read their softness / hardness as per their previous use

• Identify the market value of different types of stones

• Identify the stages in gemstone processing

• Identify the work flow involved in the gemstone processing procedure followed by the organisation

• Identify the scope of work in the company with respect to specialisation area and gemstone processing objective of the company

Different types of gemstones, Market price chart of gemstones

Notebook, paper, pen, pencils, chalk, board markers, white board

Computer and PPT presentation

2. Doping the Gemstone



Corresponding NOS Code G&J/N6601

• Inspect the stones in the received bag to ensure that their types, shape, weight and quantity are in line with the job sheet

• Assess the stones considering their shape, size and softness

• Interpret the plan to align the stone as per the job sheet

• Use the correct dops according to the type of gemstones

• Identify appropriate materials such as wax and lac for fixing the stones

Different types of gemstones, Different tools used in gemstone processing such as scaifies, tweezers, lamps, loupes, trays, wax, lac

Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners

Fluorescence shade light, Blue velvet tray with compartments,

Gemstone Processor

Sr. No.


• Demonstrate how to fix the stone accurately as per the plan

• Manage appropriate level of heating of the stone to avoid any colour change

• Demonstrate how to achieve scratch-free doping and secure setting

• Organise work for timely, damage free and riskless delivery of gemstones to the facet maker or shaper

• Manage the daily target of dops prepared every day as per plan

Dops with indexing, Goggles, Gloves and face mask, Chamois/cleaning cloth, Weighing balance


Computer and PPT presentation

3. Coordinating with Others




• Coordinate with supervisor to understand the work output requirements, operation details and hazards, delivery schedule and workflow related difficulties

• Comply with company’s policies on non-disclosure of confidential information

• Report any anticipated delays

• Work with colleagues as a team to achieve team goals and to multi-task relevant activities

• Communicate with supervisor or co-workers to find solutions on any workflow related difficulties

• Manage inter/intra-departmental conflicts appropriately

• Identify how to communicate effectively

• Demonstrate disciplined and professional behaviour

Policy documents, schedule charts, time logs, records, projector, PPT, etc.

4. Maintaining Health and Safety at Workplace

Theory Duration

• Identify potential sources of danger

• Use precautionary methods to prevent fire

• Apply appropriate first aid procedure in the event of an emergency

Safety hand gloves, Mask, Safety shoes, Fire extinguisher, First aid kit

Computer or laptop attached to LCD projector

Gemstone Processor

Sr. No.


(hh:mm) 10:00



• Use appropriate safety gears as per company policies

• Comply with the electrical safety guidelines

• List the key points of a fire drill such as rescue techniques and correct use of fire extinguisher

• Identify the different type of fires and their equivalent fire extinguishers

• Differentiate between various types of safety signs and their meaning

Compulsory NOS

Total Duration 200:00

Theory Duration 70:00

Practical Duration 130:00

Unique Equipment Required:


Scaifies, Tweezers, Lamps, Loupes, Trays, Wax, Lac, Fluorescence shade light, Blue velvet tray with compartments

Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing, Goggles, Gloves and face mask, Chamois/cleaning cloth, Weighing balance



Safety shoes, Fire extinguisher, First aid kit

Gemstone Processor

ELECTIVES (Mandatory to select at least one title)

ELECTIVE 1: Pre-shaping

Sr. No.


1. Pre-shaping/ Pre-forming Gemstone





• Assess the plan to understand the pre-shaping requirement

• Manage vibrations-free rotation by levelling the scaife and grinding mill and fixing the vertical laps securely

• Select the different types of laps and powders according to the type of the gemstone

• Operate water jet with correct pressure to reduce the adverse effect of overheating on the stones

• Identify different types of shapes in demand

• Demonstrate how to pre-shape the pre-forms as per plan

• Use different tools and equipment such as calibrating machines, faceting mill and measuring instruments in a safe manner

• Demonstrate calibration of stones in terms of weight, measurements and size as per plan

• Interpret the plan to achieve the required number of quality checked and approved stones

Different types of sample gemstones

Different faceting tools and machines such as faceting mill, calibrating machine, grinding mill, water jet etc.

Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, Dops, Scaifies, Tweezers, Lamps, Sieves, Gauges

Laps and powders of different materials available such as Diamond, steel, grit laps

Day lamp, Fluorescent lamp, Packets, Marking pens



2. Operating Tumble Machine and Delivering Stones


Practical Duration

• Apply appropriate technique to operate tumble machine

• Identify the consumables required for tumble shaping

• Assess the number of tumble cycles required as per the type of gemstone

• Use appropriate quantity and types of abrasives to maintain quality of stones


Tumbling machine, Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, Dops, Scaifies, Tweezers, Lamps, Sieves, Gauges, Abrasives

Laps and powders of different materials available such as Diamond, steel, grit laps

Gemstone Processor

(hh:mm) 15:00


• Comply with the standards so as to keep stone loss within prescribed limits

• Manage to achieve the daily target in terms of carat and number of stones worked on

• Organise work for timely and hazard-free delivery of pre-shaped stones

• Report problems faced or anticipated during pre-shaping of stones

• Prepare documents as per company policy to inform about stone losses that occur while working

Day lamp, Fluorescent lamp, Packets

Computer or Laptop Attached to LCD Projector

Safety Hand Gloves, Mask, Safety Shoes, Fire Extinguisher, First Aid Kit

Elective 1:






Different faceting tools and machines such as faceting mill, calibrating machine, grinding mill, water jet etc.

Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, Dops, Scaifies, Tweezers, Lamps, Sieves, Gauges, Abrasives

Laps and powders of different materials available such as diamond, steel, grit laps

Day lamp, Fluorescent lamp, Packets, Marking pens



Gemstone Processor

ELECTIVE 2: Polishing

Sr. No.


1. Polishing the Gemstones





• Assess the type shape, size and facet or cabochon of stone to understand the polishing requirement

• List the polishing requirements such as symmetry and colour defects, potential problems in the process and so on

• Demonstrate how to level the scaife or faceting mill

• Operate water jet with correct pressure to reduce the adverse effect of overheating on the stones

• Identify different machines and tools used in the faceting operation to polish the stones

• Manage proper polishing of facets of a stone while maintaining their symmetry and ensuring that no window is seen on the surface of the stone

• Assess the angle indexing required to achieve maximum clarity and brilliance in polished stone

• Select correct lap, powder and buff for the polishing process




• Organise work for timely and hazard-free delivery of polished,

Different types of gemstones

Different polishing tools and machines such as faceting mill, various types of suitable scaife, angle indexing tool, laps, dops, powder, buffs etc.

Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, dops, Polishing pads, Trays, Refractometer, Spectroscope, Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing

Tweezers, Sieves, Gauges, Day lamp, Fluorescent lamp, Packets, Marking pens, Araldite, spirit burner, Water jet

Computer or Laptop Attached to LCD Projector

Safety Hand Gloves, Mask, Safety Shoes, Fire Extinguisher, First Aid Kit

Gemstone Processor

scratch-free stones

• Report problems faced or anticipated during polishing of stones


Elective 2:





Different types of gemstones

Different polishing tools and machines such as faceting mill, various types of suitable scaife, angle indexing tool, laps, dops, powder, buffs etc.

Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, dops, Polishing pads, Trays, Refractometer, Spectroscope, Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing

Tweezers, Sieves, Gauges, Day lamp, Fluorescent lamp, Packets, Marking pens, Araldite, Spirit burner, Water jet



Gemstone Processor

ELECTIVE 3: Facet Making

Sr. No.


1. Making Facets on Gemstones





• Assess the maximum number of facets that can be created on a stone to understand the faceting requirements as per the plan

• Apply appropriate angle indexing for cutting facets to achieve the required shapes

• Identify the angles at which the doped stones have to be faceted

• Demonstrate how to cut facets according to the shape, colour, brilliance and metered edges of the stone while ensuring there is no window in the facets

• Use different tools and machines like faceting mill and scaifes for the faceting process in a safe manner

• Differentiate between the various types of laps and powders available for the different types of stones

• Demonstrate how to level the scaife or faceting mill

• Assess the treatment required for the inclusions on the basis of the value of the stones

• Operate water jet with correct pressure to reduce adverse effect of overheating on the stones



• Manage to achieve the daily target in terms of carat and number of

Sample gemstones

Different faceting tools, faceting mills, laps, dops, scaifies, tweezers, lamps, loupes, cutters, polishing pads, trays, angle indexing tool

Different instruments for inspecting / checking gemstones such as magnifying glass, loupe, Sieves, Gauges, MoH scale, Weighing scale, Vernier callipers, Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing

Day lamp, Fluorescent lamp, Packets, Marking pens, Araldite, Spirit burner, Water jet, Abrasive

Safety hand gloves, Mask, Safety shoes, Fire extinguisher, First aid kit Computer or laptop attached to LCD projector

Gemstone Processor

stones worked on

• Organise work for timely and hazard-free delivery of scratch-less facets

• Report problems faced or anticipated during faceting of stones


Elective 3:





Sample gemstones, Different faceting tools, faceting mills, laps, dops, scaifies, tweezers, lamps, loupes, cutters, polishing pads, trays, angle indexing tool

Different instruments for inspecting / checking gemstones such as magnifying glass, loupe, Sieves, Gauges, MoH scale, Weighing scale, Vernier callipers, Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing

Day lamp, Fluorescent lamp, Packets, Marking pens, Araldite, Spirit burner, Water jet, Abrasive

Safety hand gloves, Mask, Safety shoes, Fire extinguisher, First aid kit, Computer or laptop attached to LCD projector

Gemstone Processor

ELECTIVE 4: Girdle Polishing

Sr. No.


1. Polishing the Girdle of Faceted Gemstones





• Assess the type, shape, size and facet or cabochon of the stones to understand the polishing requirement

• List the polishing requirements such as symmetry and colour defects, potential problems in the process and so on

• Apply appropriate angle indexing on polishing machine for achieving maximum clarity and brilliance in girdle of stone

• Identify the angle required for girdle polishing

• Operate water jet with correct pressure to reduce adverse effect of overheating on the stones

• Demonstrate how to perform girdle faceting to bring out the sharpness of the edges of a girdle clearly

• Use appropriate laps, powder and buffs for different types of stones

• Identify the working process of the polishing mill

• Demonstrate calibration of girdles as well as stones in terms of shape and size as per plan

• Maintain the shape and size of the faceted stone while ensuring there is no damage to the previously created facets

• Demonstrate how to achieve sparkle, shine and finish as per plan


Sample gemstones

Laps of different materials, Different buffs such as wool, wood and leather and buffing powders such as chrome oxide

Polishing machine, Girdle

polisher

Magnifying glass, loupe, MoH scale, Weighing scale, Vernier callipers, Angle indexing tool,

Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing, scaifies, tweezers, lamps, loupes, cutters, polishing pads, trays, refractometer, spectroscope

Tweezers, Sieves, Gauges, Day lamp, Fluorescent lamp, Packets, Marking pens, Spirit burner, Water jet

White board/black board marker/ chalk, Duster, Notepads, Pens, Pencils, Blank Sheets

Safety hand gloves, Mask, Safety shoes, Fire extinguisher, First aid kit, Computer or laptop attached to LCD projector

Gemstone Processor


• Organise work for timely and hazard-free delivery of scratch-less facets

• Report problems faced or anticipated during polishing of stones


• Plan to achieve maximum number of quality checked and approved girdle-polished gemstones

Elective 4:





Sample gemstones


Polishing machine, Girdle polisher

Magnifying glass, loupe, MoH scale, Weighing scale, Vernier callipers, Angle indexing tool, Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing, scaifies, tweezers, lamps, loupes, cutters, polishing pads, trays, refractometer, spectroscope

Tweezers, Sieves, Gauges, Day lamp, Fluorescent lamp, Packets, Marking pens, Spirit burner, Water jet

Safety hand gloves, Mask, Safety shoes, Fire extinguisher, First aid kit Computer or laptop attached to LCD projector

Gemstone Processor

Grand Total Duration:

Minimum Duration for the QP: 250 hrs



Maximum Duration for the QP: 400 hrs



Unique Equipment Required for the QP:


Scaifies, Tweezers, Lamps, Loupes, Trays, Wax, Lac, Fluorescence shade light, Blue velvet tray with compartments

Proportion and symmetry analyser machine, Stone scoop, Alcohol or thinners, Dops with indexing, Goggles, Gloves and face mask, Chamois/cleaning cloth, Weighing balance

Computer or laptop attached to LCD projector, Safety shoes, Fire extinguisher, First aid kit

Different polishing tools and machines such as faceting mill, angle indexing tool, powder, buffs etc.

Magnifying glass, Loupe, MoH scale, Weighing scale, Vernier callipers, dops, Polishing pads, Trays, Refractometer, Spectroscope, Stone scoop Sieves, Gauges, Day lamp, Fluorescent lamp, Packets, Marking pens, Araldite, spirit burner, Water jet, Polishing machine, Girdle polisher


White board/black board marker/ chalk, Duster, Notepads, Pens, Pencils, Blank Sheets

(This syllabus/ curriculum has been approved by Gem and Jewellery Skill Council of India)

Gemstone Processor

Trainer Prerequisites for Job role: “Gemstone Processor” mapped to Qualification Pack: “G&J/Q6707, Version 1.0”

Sr.

No.

Area Details

1 Job Description To deliver accredited training service, mapping to the curriculum detailed above, in accordance with the Qualification Pack “G&J/Q6707, Version 1.0”

2 Personal Attributes The individual must possess the ability to work quickly and methodically, the ability to concentrate while doing repetitive tasks, the ability to follow instructions, good practical skills and attention to details, good eyesight, steady grip and ability to work for long hours in sitting posture, integrity in dealing with precious metal jewellery. He must be able to solve problems in order to avert machine failures, errors and avoid safety hazards.

3 Minimum Educational Qualifications

8th Standard

4a Domain Certification Certified for Job Role: Gemstone Processor mapped to QP: “G&J/Q6707, v1.0”. Minimum accepted score is 80%.

4b Platform Certification Recommended that the Trainer is certified for the Job Role: “Trainer”, mapped to the Qualification Pack: “MEP/Q2601”. Minimum accepted score for the trainers is 80%.

5 Experience The minimum experience required is 5 years in QC/ Trainer/ Manager/ Team leader/ Supervisor Bruting/laser coning.

Gemstone Processor

Assessment Criteria for “Gemstone Processor”

Job Role Gemstone Processor

Qualification Pack G&J/Q6707, Version 1.0

Sector Skill Council Gem and Jewellery Skill Council of India

Guidelines for Assessment

1. Criteria for assessment for each Qualification Pack will be created by the Sector Skill Council.

Each Performance Criteria (PC) will be assigned marks proportional to its importance in NOS.

SSC will also lay down proportion of marks for Theory and Skills Practical for each PC.

2. Each NOS will have assessed both for theoretical knowledge and practical.

3. The assessment will be based on knowledge bank of questions created by the SSC.

4. Individual assessment agencies will create unique question papers for theory and skill practical

part for each candidate at each examination/training centre.

5. To pass the Qualification Pack, every trainee should score a minimum of 70% in every NOS.

6. In case of successfully passing only certain number of NOS's, the trainee is eligible to take

subsequent assessment on the balance NOS's to pass the Qualification Pack.

7. In case of unsuccessful completion, the trainee may seek reassessment on the Qualification Pack.

Compulsory NOS Total Marks: 60

Marks Allocation

Assessment Outcomes

Performance criteria Total Marks

Out of

Theory Skills Practical

G&J/N6601 Dop the gemstone

PC1. match the stone type, weight and number as mentioned on the bag received from supervisor

20

1 0 1

PC2. check the assortment of stones for shape, size, softness

2 0 2

PC3. interpret the plan for the stone as per job sheet for stone to be aligned

2 1 1

PC4. align the stone with accuracy 2 0 2

PC5. make correct selection of dop and material for fixing

2 0 2

PC6. maintain appropriate level of heating so that stone does not change colour

2 1 1

PC7. achieve scratch-free doping 3 1 2

PC8. achieve secure setting 2 0 2

PC9. ensure timely delivery to facet maker or shaper

1 0 1

PC10. achieve number of dop prepared per day as per target given

2 1 1

PC11. deliver damage-free output with minimum hazards

1 0 1

Total 20 4 16

PC1. coordinate for receiving work instructions and raw materials from reporting supervisor

1 0

1

Gemstone Processor

G&J/N9901 Coordinate with others

PC2. communicate to the reporting supervisor about process flow improvements, product defects received from previous process, repairs and maintenance of tools and machinery as required

20

1 0 1

PC3. communicate to reporting supervisor about operation details and hazards

1 0 1

PC4. interact with supervisor regarding compliance of company policy and rules

2 0 2

PC5. coordinate with colleagues to share work, as per the workload in order to achieve team goals

3 0 3

PC6. communicate and discuss work flow related difficulties in order to find solutions with mutual agreement

2 0 2

PC7. coordinate and receive feedback from quality control department

2 1 1

PC8.coordinate for putting team goals over individual goals

1 0 1

PC8. resolve conflicts by communicating with colleagues and other departments

2 0 2

PC10. coordinate with colleagues regarding multitasking in other departments with requirements

3 1 2

PC10. adhere to nondisclosure policy of the company in all outside coordination

2 1 1

Total 20 3 17

G&J/N9902 Maintain health and safety at workplace

PC1. identify and use appropriate protective clothing/equipment for specific tasks and work

20

2 0 2

PC2. identify hazardous job activities in his/her job and communicate the possible causes of risks or accidents in the workplace

1 0 1

PC3. carry out safe working practices while dealing with hazards to ensure safety of self and others

1 0 1

PC4. identify and avoid doing any tasks or activities in a wrong posture

2 0 2

PC5. practice appropriate working postures to minimise occupational health related issues

2 1 1

PC6. use the appropriate fire extinguishers on different types of fire.

1 0 1

PC7.demonstrate rescue techniques applied during fire hazard

2 0 2

PC8. demonstrate good housekeeping in order to prevent fire hazards

1 0 1

PC9. demonstrate the correct use of any 2 0 2

Gemstone Processor

fire extinguisher

PC10. administer appropriate first aid procedure to victims wherever required eg.in case of bleeding, burns, choking, electric shock etc.

1 0 1

PC11. respond promptly and appropriately to an accident or medical emergency

3 1 2

PC12. participate in emergency procedures such as raising alarm, safe evacuation, correct means of escape, correct assembly point etc.,

2 1 1

Total 20 3 17

Gemstone Processor

Electives Elective 1. Pre-Shaping

Total Marks: 40

Marks Allocation

Assessment Outcomes


Out of


G&J/N6602 Pre-shape or pre-form gemstone

PC1. match the stone type, weight, number as mentioned on the bag with gemstone received from supervisor

30

2 1 1

PC2. understand pre-shaping requirement as per plan

2 1 1

PC3. level the scaife or grinding mill or fix vertical laps securely for vibrations-free rotation

3 1 2

PC4. use correct pressure on water jet to reduce adverse effect of overheating of stone, such as change of colour or breakage

2 0 2

PC5. Pre-shape number of preforms generated with shape as planned

3 1 2

PC6. calibrate: size, dimensions and weight as per plan

5 2 3

PC7. identify correct lap and powder to use

4 0 4

PC8. achieve maximum number of QC approved stones

2 1 1

PC9. deliver hazard-free output 2 1 1

PC10. deliver the number and carats of stones preformed per day against target given

1 0 1

PC11. maintain stone loss within prescribed limits, particularly, in precious stones

2 0 2

PC12. deliver pre-shaped stone in time by reporting problems faced or anticipated well in advance

2 0 2

Total 30 8 22

G&J/N6603 Operate tumble shaping machine


10

3 1 2

PC2. run target number of tumble cycles 2 0 2

PC3. maintain quality of stones using appropriate quantity and types of abrasives

3 1 2

PC4. deliver pre-shaped stone in time by reporting problems faced or anticipated

2 0 2

Total 10 2 8

Gemstone Processor

Electives Elective 2. Polishing

Total Marks: 40

Marks Allocation

Assessment Outcomes


Out of


G&J/N6701 Polish the faceted or cabochon gemstone


40

2 1 1

PC2. check shape, size and facet or cabochon of stone for polishing as per job sheet for symmetry and colour defects and potential problems in polishing process

3 1 2

PC3. understand the type of stone to be polished such as soft or hard, transparent or translucent or opaque

3 2 1

PC4. level the scaife or faceting mill 3 1 2

PC5. set the correct pressure on water jet to reduce adverse effect of overheating of stone, such as change of colour or breakage

3 1 2

PC6. ensure that no window is seen on the surface of the stone and facets are polished completely

4 1 3

PC7. achieve appropriate angle- indexing 4 1 3

PC8. use correct lap, powder and buff 3 1 2

PC9. calibrate the gemstone 4 0 4

PC10. achieve maximum number of QC approved polished gemstones

2 0 2

PC11. deliver the number of stones polished per day against target given

2 0 2

PC12. achieve scratch-less facets or cabochon with brilliance level as per job sheet

4 1 3


2 0 2

PC14. deliver polished stone in time by reporting problems faced or anticipated well in advance

1 0 1

Total 40 10 30

Gemstone Processor

Electives Elective 3. Facet Making

Total Marks: 40

Marks Allocation

Assessment Outcomes


Out of


G&J/N6702 Make facets on gemstone


40

2 1 1

PC2. identify faceting requirement as per plan such as how many facets and shape of facet to be created

2 1 1

PC3. achieve maximum number of facets to be created per stone

5 2 3

PC4. cut facets according to the shape, colour, brilliance and metered edges

5 2 3

PC5. make accurate use of angle-indexing 5 2 3

PC6. use correct lap and powder for the stone

3 1 2

PC7. ensure there is no window in facets 3 1 2

PC8. achieve accurate calibration 2 0 2

PC9. achieve maximum number of QC approved stones

2 0 2

PC10. achieve number and carats of stones faceted per day against target given

4 0 4

PC11. achieve scratch-less facets 4 0 4


1 0 1

PC13. deliver faceted stone in time by reporting problems faced or anticipated well in advance

2 0 2

Total 40 10 30

Gemstone Processor

Electives Elective 4. Girdle Polishing

Total Marks: 40

Marks Allocation

Assessment Outcomes


Out of


G&J/N6703 Polish the girdle of faceted gemstone

PC1. receive bag of faceted gemstones and instructions from supervisor

40

1 0 1

PC2. match the stone type, weight and number as mentioned on the bag

1 0 1

PC3. check shape, size and facet of stone for polishing as per job sheet for symmetry and colour defects and potential problems in polishing process

2 1 1

PC4. understand the type of stone to be polished such as soft or hard, transparent or translucent or opaque

2 1 1

PC5. carry out the polishing within the permitted level of stone loss

2 0 2

PC6. use water jet to reduce adverse effect of overheating of stone, such as change of colour or breakage

2 0 2

PC7. bring out sharpness of edges of girdle clearly

2 0 2

PC8. maintain shape and size of the faceted stone

2 1 1

PC9. calibrate the shape and size of girdle to be achieved

3 1 2

PC10. avoid damage to facets that were previously created

2 1 1

PC11. select correct angle for girdle polishing

3 1 2

PC12. achieve sparkle or shine or finish as per job sheet or plan

5 0 5

PC13. ensure accurate use of angle-indexing

2 1 1

PC14. use correct lap, powder and buff 3 0 3

PC15. achieve accurate calibration 2 1 1

PC16. achieve maximum number of QC approved girdle polished gemstones

1 0 1

PC17. achieve the number of girdles polished per day against target given

1 0 1

PC18. deliver scratch-less facets with brilliance level as per job sheet

2 1 1

PC19. maintain, stone loss within prescribed limits, particularly, in precious stones

1 1 0

PC20. deliver polished stone in time by reporting problems faced or anticipated well in advanced

1 0 1

Total 40 10 30

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