C17: The GIA Colored Stones Deep Dive

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Royal Velvet Blue Sapphire - GIA Colored Stones Benchmark
GIA Reference Specimen

Royal Velvet Blue Sapphire

Geological formation, color science, diagnostic inclusions, and global auction trading hubs.

Course Overview

Equip yourself with the scientific and market authority required to present five- and six-figure colored gemstones with poise and commercial fluency. This 16-module masterclass bridges rigorous GIA gemology with luxury sales floor execution, covering the Big Three (Ruby, Sapphire, Emerald), capstone heritage gems (Pearls and Jade), advanced treatment detection, and geographic origin valuation.

Curriculum Modules

  1. Module 1: Before the Grader — A Short History of Colored Stones and How to Use GIA’s Research Library
  2. Module 2: How Colored Stones Form — Geologic Environments: Igneous, Pegmatite, Hydrothermal, Metamorphic, Sedimentary
  3. Module 3: Finding Them — Mining, Recovery, Traceability, and Field Gemology
  4. Module 4: Physical Properties — Hardness, Toughness, Cleavage, and Durability on the Counter
  5. Module 5: Color and Light — How Gems Get Their Color: Transition Metals, Luminescence & Pleochroism
  6. Module 6: Inclusions & The Micro-World — Reading the Microscopic Fingerprint (Silk, Two/Three-Phase Inclusions)
  7. Module 7: Cut — Orienting Color, Weight Retention, and Proportions
  8. Module 8: Synthetics & Simulants — Verneuil, Flux, Hydrothermal, CVD/HPHT, and Assembled Composite Stones
  9. Module 9: Treatments & Disclosure — Thermal Enhancement, Lattice Diffusion, Resin/Oil, and FTC Compliance
  10. Module 10: The Colored Stone Market — Global Hubs (Bangkok, Chanthaburi, Jaipur), Auction Pricing, and Margins
  11. Module 11: Ruby Deep Dive — Pigeon’s Blood, Marble vs. Basalt, and Lead-Glass Filling Disclosure
  12. Module 12: Blue Sapphire Deep Dive — Velvet, Cornflower, Kashmir, Ceylon, Madagascar, and Basalt Iron Quenching
  13. Module 13: Fancy Sapphire & Phenomenal Corundum — Padparadscha Standards, Asterism (Stars), and Color Change
  14. Module 14: Emerald Deep Dive — Black Shale (Muzo/Chivor) vs. Schist (Kagem), Jardin, and the F1/F2/F3 Oil Tier
  15. Module 15: Pearls Capstone — Nacre, Seven Value Factors, and Cultured Pearl Care
  16. Module 16: Jade Capstone — Jadeite vs. Nephrite, Type A/B/C Testing, and the Chinese Cultural Market
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Course Content

Module 1: Before the Grader — History & Research Skills
Comprehensive masterclass covering Module 1: Before the Grader — History & Research Skills. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

  • Module 1: Before the Grader — History & Research Skills — Field Masterclass

Module 2: How Colored Stones Form — Geologic Environments
Comprehensive masterclass covering Module 2: How Colored Stones Form — Geologic Environments. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 3: Finding Them — Mining, Recovery & Field Gemology
Comprehensive masterclass covering Module 3: Finding Them — Mining, Recovery & Field Gemology. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 4: Physical Properties — Hardness, Toughness & Cleavage
Comprehensive masterclass covering Module 4: Physical Properties — Hardness, Toughness & Cleavage. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 5: Color and Light — How Gems Get Their Color
Comprehensive masterclass covering Module 5: Color and Light — How Gems Get Their Color. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 6: Inclusions & the Micro-World — Reading the Fingerprint
Comprehensive masterclass covering Module 6: Inclusions & the Micro-World — Reading the Fingerprint. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 7: Cut — Orienting Color, Weight Retention & Proportions
Comprehensive masterclass covering Module 7: Cut — Orienting Color, Weight Retention & Proportions. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 8: Synthetics, Simulants & Assembled Stones
Comprehensive masterclass covering Module 8: Synthetics, Simulants & Assembled Stones. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 9: Treatments & Disclosure — Heat, Diffusion, Filling & Oiling
Comprehensive masterclass covering Module 9: Treatments & Disclosure — Heat, Diffusion, Filling & Oiling. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 10: The Colored Stone Market — Hubs, Auctions & Pricing
Comprehensive masterclass covering Module 10: The Colored Stone Market — Hubs, Auctions & Pricing. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 11: Ruby Deep Dive — Pigeon’s Blood, Marble & Basalt
Comprehensive masterclass covering Module 11: Ruby Deep Dive — Pigeon's Blood, Marble & Basalt. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 12: Blue Sapphire Deep Dive — Velvet, Cornflower & Basalt
Comprehensive masterclass covering Module 12: Blue Sapphire Deep Dive — Velvet, Cornflower & Basalt. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 13: Fancy Sapphire & Phenomenal Corundum
Comprehensive masterclass covering Module 13: Fancy Sapphire & Phenomenal Corundum. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 14: Emerald Deep Dive — Black Shale, Jardin & Treatments
Comprehensive masterclass covering Module 14: Emerald Deep Dive — Black Shale, Jardin & Treatments. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 15: Pearls Capstone — Nacre, Seven Value Factors & Care
Comprehensive masterclass covering Module 15: Pearls Capstone — Nacre, Seven Value Factors & Care. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

Module 16: Jade Capstone — Jadeite vs. Nephrite & The Bangle
Comprehensive masterclass covering Module 16: Jade Capstone — Jadeite vs. Nephrite & The Bangle. Includes technical benchmarks, verbatim dialogues, and operational floor frameworks.

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