Students have been trained to attain self confidence in identification of all kinds of gemstones with and without the use of sophisticated instruments. The course covers all aspects of gemstone from its mining till its final use by a consumer. Theory and intensive practicals have been so carefully crafted and included in the course . The course gives confidence to handle and deal with gemstones.

The Institute has a well equipped Library which contains more than 2,000 books and as many as 400 titles. In addition the institute also subscribes to about 15 foreign magazines and periodicals, which are totally devoted to Gemmology and the Gem Trade. Home leading facility is available to students.

The Institute also has got a large and varied collection of gemstones / specimen for the purpose of teaching and research.

1) DIPLOMA IN GEMMOLOGY

Duration: 3 1/2 Months
Timings: 10:00 a.m. to 2:00 p.m.
Date of Commencement: January 6th ;  April 15th ;  August 25th

2) DIPLOMA IN GEMMOLOGY - CORRESPONDENCE COURSE

Duration: 1 year – Starting from January

COURSE CONTENT:

1. Introduction of gems :
    a. Basic qualities;
    b. Chemical composition;
    c. Weights and Measures.

2. Chemical Composition

3. Crystallography of gemstones
    Nature of Crystals: Systems of Crystallography; Crystalline and non Crystalline Materials; Forms;     Habit; Twinning.

4. Physical Properties :
    a. Hardness
    b. Cleavage
    c. SG

5. Optical properties :
    a. Colour;
    b. Transparency;
    c. Visible Spectrum;
    d. Light Reflection;
    e. Total Internal Reflection; Single and Double Refraction;
    f. Dispersion;
    g. Polarization;
    h. Refractive index and its determination by Refractometer; Reflectivity; Reflectometers.

6. Causes of colour in gemstones :
    Pleochroism; Interference; Lustre; Sheen; Opalescence; Adularescence; Irridescence; Asterism;     Chatoyancy.

7. Use of instruments such as :
    Jeweller's Lens; Microscope; Spectroscope; Dichroscope; Chelsea Colour Filter; Ultraviolet light;     Polariscope; Refractometer.

8. Differentiating Natural Gemstones From Its Synthetics And Simulants
    Different Types of Synthetics & Its Identification

9. Description of Gem Stones :
    The varieties and colours, species, chemical composition and crystal systems, physical properties etc

Special characteristics and provenance of the following gemstones:

  1. Beryl : Emerald, Aquamarine, Heliodor, Morganite, Goshenite; Calcite;

  2. Chrysoberyl : Alexandrite, Cat's eye; Coral

  3. Corundum : Ruby, Sapphire, Star Ruby/Sapphire; Cassiterite; Danburite; Diamond; Diopside;                            Enstatite; Epidote

  4. Feldspar Group : Moonstone, Albite, Amazomte, Orthoclase, Plagioclase, Labradorite, Sunstone

  5. Garnet Group : Almandme, Pyrope, Grossular, Andradite, Spessartite, Uvarovite

  6. Tourmaline : Achroite, Rubellite, Indicolite

  7. Chalcedony Group : Chalcedony Carnelian, Chrysoprase, Moss Agate, Onyx, Sardonyx; Jasper;                                           Bloodstone; Rhodochrosite; Rhodonite; Sodalite; Sinhalite; Smithsonite; Sphene

  8. Spinel : Ceylonite Gahnospinel

  9. Spodumene : Kunzite, Hiddenite

10. Opal : Fire Opal, White Opal; Black Opal, Water Opal

11. Pearl : Australian, Venezuelan, Black, Blue, Freshwater, Conch, Clam; Cultured, Nucleated,                    Non-Nucleated, Imitation;

12. Quartz : Rock crystal, Amethyst, Citrine, Smoky Quartz, Rose Quartz, Aventurine; Quartz Cats eye,                        Tiger's eye, Rutilated Quartz.

And other Gemstones mentioned below :
  Haematite ; Howelite; Iodocrase; lvory; Jadeite; Kornerupine ; Amber; Andalusite; Apatite; Axinite;   Aragonite; Azurite^Benitoite Kyanite; Lapis Lazuli; Malachite; Nephrite; Obsidian; Odontite; Fluorspar;   Peridot; Phenakite; Prehnite; Pyrites; Steatite; Topaz; Tortoiseshell; Turquoise; Variscite; Zircon; Zoisite.

10. Different types of treatments on gemstones :
     Heat treatment, glass filling, diffusion etc.

11. Identification of treated gemstones

12. Identification of various inclusions in gemstones by occurrences

13. Marketing aspects of gemstones & export procedures :
    a. Gem & Jewellery Industry An Overview, Analysis Of Prospects And Problems Of the Industry
    b. Sectors Such As Precious / Semi Precious, Diamonds, Pearls, Synthetic, Imitation, Jewellery
    c. Studded and Plain Gold and Formalities.

14. Fashioning of Gemstones
    a. Procedures, Processes and Equipment Used In Cutting of Diamonds and Other Stones.
    b. Different Styles of Cutting. Grading Gemstones for Quality of Cutting.

15. Electrical and Magnetic properties of gemstones, conductometer.

16. Thermal conductivity and Thermal probes.

17. Practicals :

    1.  Observation of external features (cut, colour, fractures, etc.) of a gemstone using a "10x lens;

    2.  Observation of external symmetry, surface marks and cleavage of various crystals and their          identification;

    3.  Determination of hardness on Moh's Scale using hardness pencils and hardness plates;

    4.  Determination of specific gravity by hydrostatic weighing method and by using heavy liquids;

    5.  Measurement of refractive indices and birefringence tests using a gem-testing refractometer;

    6.  Detection of double refraction, interference figures and internal strain with the polariscope;

    7.  Detection of double refraction, by observing pleochroic colours with the dichroscope and 10x lens.           Identification of gemstones on the basis of pleochroic colours;

    8.  Study of the absorption spectra of various gemstones using a direct vision spectroscope;

    9.  Study of the fluorescent colours exhibited by various gemstones under ultraviolet (long wave and           short wave) light;

   10. Observation of the internal features of various natural and synthetics gemstones with a            microscope;

   11. Use of colour filters in detecting synthetic gemstones;

   12. Identification of unknown gemstones using the above techniques. During the course each student           individually practices and handles hundreds of gemstones;

   13. Visual Identification of various gemstones by its crystal system and other external properties;

   14. Various types of cuts and how to cut gemstones.

3) GEM IDENTIFICATION - CERTIFICATE COURSE

Duration: 1 Month (50 Hours)
Date of Commencement: January 7th ; February 16th ; March 23rd ; April 30th ; June 8th

4) GEM IDENTIFICATION - CERTIFICATE COURSE

Duration: 2 Weeks (36 Hours)
Date of Commencement: January 5th & 19th ; February 2nd & 16th ; March 2nd & 18th ; April 4th & 13th ;                                                 May 14th ; June 1st & 15th

COURSE CONTENT:

• Crystal Systems and Surface Markings
• Physical and Optical Properties of Gemstones
• Identification of commercial important Gemstones
• Identification of Synthetics
• Identification of different Treatments
• Use of Instruments such as Spectroscope, Microscope, Refractometer, Dichroscope etc.

5) DIPLOMA IN DIAMOND GRADING - ROUGH & POLISH DIAMONDS

Duration: 3 1/2 Months
Timings: 9:30 a.m. to 11:30 a.m.
Date of Commencement: January 7th ; April 16th ; August 26th

COURSE CONTENT:

 1. CHEMICAL COMPOSITION :
     Different forms of carbon (graphite, amorphous, diamond).

 2. GEOLOGICAL OCCURRENCES AND THEIR HISTORY :
     Gem and industrial diamond, kimberlite (mines); Alluvial deposits (river beds), Marine deposits      (beaches, sea-bed); Meteoric diamonds; Localities like Australia; Borneo; Brazil; India; Sierra Leon;      Russia; South Africa; South West Africa, Zaire, Canada etc.

 3. EXTRACTION OF DIAMONDS :
     Crushing, Washing and Screening, Heavy media separator; Grease table, Grease belt, X-ray      separation.

 4. OPERATION OF THE MARKET :
     De-Beers consolidated Mines; Diamond Trading Company (D.T.C.); Sights supplied by D.T.C.;      Diamond Bourses; Clubs; Operation of the National and International markets. Sources of Rough      diamonds: HDC, MMTC, NMDC, Local-resellers, DTC, Open market.

 5. CRYSTALLINE FORMS OF DIAMONDS AND PHYSICAL PROPERTIES:
     Crystallography, Nature of crystals; Systems of crystallography; Cubic system; Forms; Twins, Parallel      growth; Irregular forms; Growth features, Fracture; Cleavage; Hardness (Moh's Scale); Specific gravity      (Heavy liquids and Hydrostatic method); Electrical conductivity. Thermal conductivity; Graphitization.

 6. OPTICAL PROPERTIES :
     Single; double and anamolous double refraction, Refractive index; Strain patterns; Dispersion;      Absorption spectra; Transparency to Ultra-violet and x-rays; Reflectivity; Luminiscence.

 7. SORTING OF ROUGH DIAMONDS :
     Sorting by Size; Shapes; Colour; Purity.

 8. HISTORY OF CUTS :
     The modern brilliant cut; Variation of the brilliant cut; Principles of diamond cutting; Lustre, brilliance,      fire, ideal cuts and proportions; Variation from the ideal cut.

 9. MANUFACTURING OF DIAMONDS :
     Grains; Sawing; Cleaving; Bruting; Grinding; Polishing; 4,3,2, point stones; Acidizing; Ultrasonic      cleaning.

10. COLOUR GRADING OF POLISHED STONES :
       Lighting standards and magnification; Comparison stones. Colour grading systems (G.I.A.; HRD;        Indian, C.I.B.J.O.)

11. CLARITY GRADING OF POLISHED STONES :
       Magnification; Lighting; International grading scales; (G.I.A.; HRD; Indian; C.I.B.J.O.); Criteria for        grading; Internal blemishes; External defects.

12. GRADING FOR CUT :
       Spread stones; Lumpy and Fish-eye stones, Proportion scope and proportion analyzing, Carat        system; weighing scales; Estimating weight of mounted stones (gauges); Sieves and sieve sizes.
       Estimating: Table percentage, Pavilion depth, Crown angle, Pavilion angle and Girdle thickness.

13. SYNTHETIC DIAMOND :
       Synthesis; Artificial colouration; Identification of treated diamond.

14. IDENTIFICATION OF DIAMOND :
       With 10x only and with Instruments; Types of Diamond and Classification.

15. DIAMOND SIMULANTS :
       Gadolinium Gallium Garnet (GGG); Yttrium Aluminium Garnet (YAG); Strontium Titanate; Synthetic        Rutile; Synthetic Cubic Zirconia; Synthetic moissanite; Spinel, Sapphire; Zircon; Topaz; Quartz; Paste,        Doublets.

16. PRACTICALS :
       Clarity Grading, Yield estimation and planning of Rough Diamonds, Clarity, Cut and Colour grading        of polished diamonds.

6) DIAMOND : ROUGH / POLISH DIAMONDS-CERTIFICATE COURSE

Duration : 1 Month (50 Hours)
Date of Commencement : January 8th ; February 17th ; March 24th ; May 1st ; June 9th

7) DIAMOND : ROUGH / POLISH DIAMONDS-CERTIFICATE COURSE

Duration : 2 Weeks (36 Hours)
Date of Commencement : January 6th & 20th ; February 3rd & 17th ; March 3rd & 19th ; April 5th & 15th ;                                                  May 15th ; June 2nd & 16th

COURSE CONTENT :

POLISH DIAMOND GRADING

• Clarity and Colour Grading
• Inclusions, Blemishes and Plotting
• Table % & Pavilion Depth
• Finish Factors
• Identification of Natural, Synthetic Diamonds & all Simulants
• Application of Magnification, Microscope & 10x lens.

ROUGH DIAMOND ASSORTING:

• Crystal Systems
• Surface Markings
• Importance of Rough Diamond Assorting
• Sorting System
• External Features of a Rough Diamond
• Planning of Rough Diamonds

8) DIPLOMA IN JEWELLERY DESIGNING

Duration : 2 1/2 Months
Date of Commencement : February 16th ; April 20th ; July 6th

COURSE CONTENT :

• Introduction to Creativity & Designing:
  Introduction to technical drawings, concept of -Id, 2d, 3d, coordinate axis, various 2d and 3d figures,   intersection of solids, orthographic projection of various 2d and 3d figures (simple and complex).

• Counter Sketching & Drawing of Various Cuts

• Rendering of Various Cuts & Cabochons

• Introduction to various Gemstones:
  Use of various gemstones with their physical and optical properties reference to their use in jewellery,   calculation of weight of the gemstones used in design. Various styles for setting of gemstones in   metals.

• Various Textures of Gold: Use of various metals and its use in designing.

• Metal Rendering & Setting

• Basic views such as plan, front, side views of Jewellery :
  Isometric views of rings, earrings pendants and bracelets, various geometric objects 45 degree views   of different designs sectional views of different design, modification and improvement of existing   design.

• Basic Designs for various international markets :
  Especially the following American, German, Japanese, Middle East, Far East, Australian, Italian,   French, Russian, Spanish, designing from inspiration and various sources of inspiration.

• General ideas of Jewellery Manufacturing :
  Jewellery – casting, various styles of joints etc. designing up to the final stage, quality control and   linking, approximate gold weight and its cost, and craftsman charges etc.

• Preparation of Portfolio

9) CUT DESIGNING & ANALYSIS IN ASSOCIATION WITH LEXUS -UNI SURAT

Duration : 5 Weeks (60 Hours)
Date of Commencement : January 19th
Course Fees : Rs. 20,000/-

COURSE CONTENT:

• Understanding optical properties of diamond
• Understanding process flow of designing a new Cut
• Understanding Cut Designer in Diamond Calculator
• Generation of XML and ASC file
• Understanding HDR and ETAS
• Viewing the polish under various structured lighting
• Designing standard popular cuts
• Designing special cuts and optimizing them for performance
• Preparing ASC file for allocation in Rough diamonds
• Report printing and manufacturing guideline

Note:

• The above mentioned dates are tentative.
• Students are expected to register 1 week prior for short term courses before the commencement date.
• Study material will be provided by the Institute.
• Classes will be conducted at the following Address :
     GII: 9, Gurukul Chambers, 187/189, Mumbadevi Road, Zaveri Bazar, Mumbai - 400002.
            Tel No. 23420039

Gemmological Institute of India
Contact Person: Ms. Silvia W. Sequeira
Address: 304, Sukh Sagar, N. S. Patkar Marg, Opera House, Mumbai - 400 007.
Tel. No.: (022) 6651 9030 / 31,
Fax No.: (022) 2367 9189.
E-mail: gemforum@gmail.com   /   gemforum@giionline.com

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1) What is the eligibility for taking admission for any of the courses at GII ?

Minimum eligibility is SSC. However, gemmology is a professional course. It has more of practical application rather than theoretical. If one has working knowledge of English, it is sufficient to take up the courses.

2) What language are the courses conducted in? Can the student understand the course contents?

Courses are conducted in English. However, to a certain extent all the practical aspects such as the use of instruments, identification methods etc. can be explained in Marathi, Hindi, and Gujarati.

3) Do you also teach astrology / astronomy ?

 Gemmology is a study of Gemstones. We teach about all the gemstones, as to how to identify them. The courses will help a person to identify all types of Gemstones as to what Gem material it is and also distinguish the same from their imitation and synthetic counterparts. The use of gemstones in astrology / astronomy is not included in the course syllabus. However the course is of immense value for an astrologer, because he can differentiate the actual gems required for his purpose.

4) What are the career opportunities on completion of the courses ?

 Gems & Jewellery Industry is one of the largest foreign exchange earning sectors and also provides employment to over 10 lakhs of people in diamond sector alone. The courses are designed for a person for self employment as well as taking up a job in the Industry. Job opportunities such as Gemmologist, Diamond Graders, Jewellery Designers, and Sales Personnel in domestic and international markets are some of the highlights of career opportunities in the Industry.

Employment Wheel

5) Are the diplomas at par with the International Institutes? Are the diplomas accepted worldwide ?

 GII is the primer Institute in India teaching gemmology since 1971. The curriculum and methods of teaching etc. are the same as those used anywhere else in the world. In fact GII courses are designed to suit American, European and Asian market requirements. The Gemmological knowledge that GII students gain from the courses offered at GII are at par with, that of any International Institutes in the world.

6) Does GII have any affiliation with International Institutes ?

Gemmology courses offered by GII are of very high standards and GII is accredited by the Gemmological Association of Great Britain (GAGB), the pioneers of Gemmological Institute for the study of Gemstones in the world. In fact GAGB has exempted the GII Diploma Students from their FGA foundation examinations.

7) Does GII has any branches in India or abroad?

Gemmological Institute of India started its services in the year 1971 at 29, Gurukul Chambers, 187/189, Mumbadevi Road, Mumbai – 400 002, and has the laboratory services at 304, Sukh Sagar Building, N. S. Patkar Marg, Opera House, Mumbai – 400 004. The classes are conducted at Gurukul Chambers,
Mumbai – 400002.

8) What are the course fees and application procedure?

Course Fees and Courses Application Form

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