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GT100 - GEM AND JEWELLERY TRADE SECRETS

Master Insider Secrets of Fine Gemstones and Jewellery

Through expert guidance at JDMIS, you will explore the essential characteristics and trade secrets behind diamonds, pearls, jade, and coloured gemstones. Gain the professional confidence to evaluate gem quality accurately, navigate buying risks, and make informed choices across the jewellery trade.

💠 7 modules🎯 122 lessons & topics✅ 13 free previews🌐 English + 15 languages
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GT100 - GEM AND JEWELLERY TRADE SECRETS
▶ Trailer: Personal Message from Tanja
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About This Programme

Course Contents

GT100 MODULE 1: COLOURED GEMSTONES
1GT100 MODULE 1: COLOURED GEMSTONES13 lessons›

Content Duration: 3 hours 15 mins

GT100 MODULE 2: DIAMONDS
2GT100 MODULE 2: DIAMONDS13 lessons›

Total Duration: 3 hours 45 mins

  • 1.
    📝Introduction & Digital Handout🔒
    • ▶1. Overview of Topics covered🔒
    • ▶2. Where do the best diamonds come from? Brief History of Diamond🔒
    • ▶3. Characteristics of diamonds🔒
  • 2.
    📝Attributes of Diamond🔒
    • ▶1. Attribute 1: Beauty (Reaction to light)🔒
    • ▶2. Attribute 2: Durability🔒
    • ▶3. Attribute 3: Rarity🔒
  • 3.
    📝Synthetic Diamonds, Diamond Simulants and Imitations🔒
    • ▶1. Diamond Simulants and Synthetic Diamonds🔒
  • 4.
    📝Other observations and characteristics🔒
    • ▶1. Fluorescence in Diamonds🔒
  • 5.
    📝The 1st C: Colour & Digital Handout🔒
    • ▶1. Colour Grading Systems and When to Compromise on Colour🔒
  • 6.
    📝The 2nd C: Clarity🔒
    • ▶1. Professional Clarity Grading for Diamonds and When to Compromise on Clarity🔒
  • 7.
    📝The 3rd C: Carat Weight🔒
    • ▶1. Carat Weight in Diamonds and When to Compromise🔒
  • 8.
    📝The 4th C: Cut🔒
    • ▶1. Importance of Diamond Cutting🔒
  • 9.
    📝Diamond Treatments🔒
    • ▶1. Common Diamond Treatments🔒
  • 10.
    📝Diamond Certificates🔒
    • ▶1. Understanding Diamond Certificates🔒
  • 11.
    📝Care and Cleaning of Diamonds🔒
    • ▶1. How to care and clean your diamonds?🔒
  • 12.
    📝Assignment🔒
  • 13.
    📝Congratulations, you have completed GT100 Module 2🔒
GT100 MODULE 3: PEARLS
3GT100 MODULE 3: PEARLS16 lessons›

Content Duration: 5 hours

  • 1.
    📝Introduction & Digital Handout🔒
    • ▶1. Overview and History of Pearls🔒
    • ▶2. The Origins of Pearls🔒
    • ▶3. Natural, Cultured, Imitation Pearls, and the Tooth Test🔒
  • 2.
    📝Understanding the nature and value of pearls🔒
    • ▶1. Why are Pearls so expensive?🔒
    • ▶2. The Cultivation Process🔒
    • ▶3. Major Pearl Producing Regions in the World🔒
  • 3.
    📝Cultured Pearl Types🔒
    • ▶1. Common Types of Cultured Pearls🔒
    • ▶2. Japanese Akoya Pearls🔒
    • ▶3. South Sea Pearls🔒
    • ▶4. Freshwater Pearls🔒
    • ▶5. The Mussel vs the Oyster🔒
  • 4.
    📝Less Common Pearl Types🔒
    • ▶1. Mabé🔒
    • ▶2. Keshi🔒
  • 5.
    📝Introduction & Digital Handout🔒
    • ▶1. Grading Systems and Factors affecting Value🔒
    • ▶2. Six Factors Affecting Pearl Quality🔒
  • 6.
    📝Colour🔒
    • ▶1. Body Colour (Hue) and Overtone🔒
    • ▶2. Matching Pearls with Skin Tone🔒
    • ▶3. Orient🔒
  • 7.
    📝Lustre🔒
    • ▶1. Lustre🔒
  • 8.
    📝Shape🔒
    • ▶1. Spherical🔒
    • ▶2. Symmetrical🔒
    • ▶3. Baroque🔒
  • 9.
    📝Spotting🔒
    • ▶1. Spotting🔒
  • 10.
    📝Nacre Thickness🔒
    • ▶1. Nacre Thickness🔒
  • 11.
    📝Make🔒
    • ▶1. Make🔒
  • 12.
    📝Pearl Treatments🔒
    • ▶1. Pearl Treatments🔒
  • 13.
    📝Most Rare and Unusual Collector Pearls🔒
    • ▶1. Conch Pearls,  Melo Melo Pearls, and Edison Pearls🔒
    • ▶2. Hanadama Pearls🔒
  • 14.
    📝Caring for Your Pearls🔒
    • ▶1. How to Care for Your Pearls🔒
  • 15.
    📝Assignment🔒
  • 16.
    📝Congratulations, you have completed GT100 Module 3🔒
GT100 MODULE 4: PHENOMENAL GEMSTONES
4GT100 MODULE 4: PHENOMENAL GEMSTONES9 lessons›

Total Content Duration: 2 hours and 20 mins

  • 1.
    📝Introduction & Digital Handout🔒
    • ▶1. Overview of Topics🔒
    • ▶2. Unusual Reaction to Light🔒
  • 2.
    📝The 'Star' EffectPreview
  • 3.
    📝The 'Cat's Eye' Effect🔒
    • ▶1. Chatoyancy and Stationary Chatoyancy🔒
  • 4.
    📝The 'Glitter' Effect🔒
    • ▶1. Aventurescence🔒
  • 5.
    📝The 'Oil On Water' Effect🔒
    • ▶1. Iridescence, Labradorescence and Orient🔒
  • 6.
    📝The 'Billowy Light' Effect🔒
    • ▶1. Adularescence🔒
  • 7.
    📝Play of Colour🔒
    • ▶1. Play of Colour🔒
  • 8.
    📝Change of Colour🔒
    • ▶1. Change of Colour🔒
  • 9.
    📝Congratulations, you have completed GT100 Module 4🔒
GT100 MODULE 5: JADE
5GT100 MODULE 5: JADE7 lessons›

Content Duration: 2 hours

  • 1.
    📝History, Origins & Digital Handout🔒
    • ▶1. Introduction & History of Jade🔒
    • ▶2. Classification of Jadeite and Nephrite🔒
  • 2.
    📝Choosing the Best Jade - Value Factors🔒
    • ▶1. Evaluating Colour - Hue, Saturation, Tone and Distribution of colour🔒
    • ▶2. Evaluating Clarity🔒
    • ▶3. Evaluating Cut and Polish🔒
    • ▶4. Evaluating Transparency🔒
    • ▶5. Evaluating Texture🔒
  • 3.
    📝Treatments & Classification By Treatment🔒
    • ▶1. Classification and History of Jade Treatments🔒
  • 4.
    📝Imitations & Simulants🔒
    • ▶1. Jade Imitation🔒
  • 5.
    📝Care and Cleaning of Jade🔒
    • ▶1. Care and Cleaning of Jade🔒
  • 6.
    📝Assignment🔒
  • 7.
    📝Congratulations, you have completed GT100 Module 5🔒
GT100 MODULE 6: ORGANIC GEMSTONES
6GT100 MODULE 6: ORGANIC GEMSTONES11 lessons›

Content Duration: 3 hours

  • 1.
    📝Introduction & Digital Handout🔒
    • ▶1. Introduction to Organic Gemstones🔒
  • 2.
    📝Pearls🔒
    • ▶1. Recap on Pearls🔒
  • 3.
    📝Amber🔒
    • ▶1. Amber🔒
  • 4.
    📝Coral🔒
    • ▶1. Coral🔒
  • 5.
    📝Shell🔒
    • ▶1. Shell🔒
  • 6.
    📝Ivory and Bone🔒
    • ▶1. Ivory and Bone🔒
  • 7.
    📝Seeds & Nuts🔒
    • ▶1. Seeds & Nuts🔒
  • 8.
    📝Wood & Jet🔒
    • ▶1. Wood & Jet🔒
  • 9.
    📝Skins🔒
    • ▶1. Skins🔒
  • 10.
    📝Alternative Organic Gems🔒
    • ▶1. Natural Plastics and Alternative Organic Gems🔒
  • 11.
    📝Congratulations, you have completed GT100 Module 6🔒
GT100 MODULE 7: NEXT STEPS - GOING FORWARD
7GT100 MODULE 7: NEXT STEPS - GOING FORWARD8 lessons›

Content Duration: 2 hours and 10 mins

  • 1.
    📝Recap & Digital Handout🔒
    • ▶1. Recap of Modules 1 to 9🔒
  • 2.
    📝Philosophy of Gemstone Imitations🔒
    • ▶1. Gemstone Imitations🔒
  • 3.
    📝Philosophy of Synthetic Gemstones🔒
    • ▶1. Synthetic Gemstones🔒
  • 4.
    📝Introduction to Assembled Gemstones🔒
    • ▶1. Assembled Gemstones🔒
  • 5.
    📝Philosophy of Enhanced Gemstones🔒
    • ▶1. Introduction to Enhanced Gemstones🔒
    • ▶2. Chemical Treatments🔒
    • ▶3. Surface Modifications🔒
    • ▶4. Heat Treatment🔒
    • ▶5. Radiation🔒
  • 6.
    📝Identification Procedures & Testing Equipment🔒
    • ▶1. Introduction to Testing Equipment🔒
  • 7.
    📝test🔒
  • 8.
    📝Congratulations, you have completed GT100 Module 7🔒