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2. Gemological Institute of America - Wikipedia

   en.wikipedia.org/wiki/Gemological_Institute_of...

   The collection contains works published from 1496 to the present, encompassing the history and modern development of gemology. Subjects include natural and synthetic gemstones, gem treatments, jewelry design, manufacturing, and marketing. The Liddicoat Library is open to the public and the jewelry trade for on-campus research.

3. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including ( clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...

4. Tiffany & Co. - Wikipedia

   en.wikipedia.org/wiki/Tiffany_&_Co.

   Tiffany is known for its luxury goods, particularly its diamond and sterling silver jewelry. George Frederick Kunz (1856–1932), a Tiffany gemologist, became instrumental in the international adoption of the metric carat as a weight standard for gems. The Tiffany Yellow Diamond (128.54 carats (25.708 g)) is usually on display in the New York ...

5. International Gemological Institute - Wikipedia

   en.wikipedia.org/wiki/International_Gemological...

   IGI is headquartered in Antwerp, Belgium, and has offices in New York City, Hong Kong, Mumbai, Bangkok, Tokyo, Dubai, Tel Aviv, Toronto, Los Angeles, Kolkata, New Delhi, Surat, Chennai, Thrissur, Ahmedabad, Shanghai, and Cavalese. It also runs Schools of Gemology in several locations around the globe. On May 21, 2023, Blackstone Group announced ...

6. Diamond (gemstone) - Wikipedia

   en.wikipedia.org/wiki/Diamond_(gemstone)

   Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and desirable as jewelry.

7. Gemology - Wikipedia

   en.wikipedia.org/wiki/Gemology

   Gemology. Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a geoscience and a branch of Stoneology and mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify and evaluate gems. [1] [2]