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  1. GIA Gem Encyclopedia | Complete List Of Gemstones

    GIA’s Gem Encyclopedia is a virtual journey through the science and lore of gemstones from across the globe. Each precious stone page features additional detailed gemological information, a buyer’s …

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  2. Gem Identification Bluechart

    Gemstone identification chart, updated edition 2025, for the identification of synthetic and treated gemstones.

  3. Gemstone Identification Chart - National Gem Lab

    National Gem Lab is providing Unique gemstone identification chart to search easily from our search bar to find Refractive Index, Hardness & Specifc gravity

  4. Reference Charts & Materials - International Gem Society

    Table of Refractive Indices and Double Refraction of Selected Gems Refractive indices and double refraction (birefringence) help gemologists identify gems. The following table lists these values for …

  5. Ultimate Gemstone Identification Guide with Images

    A gemstone identification chart, combined with illustrative pictures, serves as a fundamental resource for both budding enthusiasts and seasoned collectors alike.

  6. Gemstone List - Names, Colors & Types of Gems | GemSelect

    Our gemstone list features over 200 precious and semi-precious varieties, a comprehensive index to find the ideal colored stone. Whether for jewelry, collecting, or crystal healing, this gemstone list guides …

  7. The Ultimate Gemstone Identification Chart: 20 Popular Stones …

    Access a detailed gemstone identification chart covering 20 popular stones, including their unique properties, distinguishing features, and origins.

  8. Gem Chart

    Whether you’re new to gemstone mining or an experienced collector, a gem chart helps identify different gemstones based on color, hardness, clarity, and other characteristics.

  9. Free Gemstone Identifier | Educational Mineralogy & Crystal …

    Learn about gemstones with our free AI identification tool. Discover minerals, properties, formation, value, and cultural significance of precious and semi-precious stones! Perfect for collectors, jewelry …

  10. Gem Identification Guide | Refractive Index Table for Gemstones — …

    Browse this gemstone reference table indexed by refractive index. Use it alongside color, UV reaction, spectroscope patterns, inclusions, and other tests to identify gems with confidence.