Understanding Gem Synthetics, Treatments, And Imitations, Part 1: An Introduction
Tech advances and market forces make it essential for gem buyers to know the science behind synthetic gemstones and gem formation. Learn the basics…
List of False or Misleading Gemstone Names
A list of False or Misleading Gemstone Names and its Actual Gemological Name. Gathered by the source “Gemstones of the World, 3rd Edition, Walter…
Our mission is to make gemology accessible and affordable
Established in 1998, IGS is the largest online gemology resource and community.
THE MILLENIUM CUT
Have you ever heard of a gemstone with one thousand facets? I have never heard of a gemstone with more than three hundred facets, let alone one thousand.…
Faceting Survey Results – Polishing – Sunstone
Faceting Survey Results for Polishing Sunstone: Get polishing methods for Sunstone. View results for various procedures in polishing Sunstone…
Faceting Survey Results – Polishing – Topaz
Faceting Survey Results for Polishing Topaz: Get ideas and methods on polishing Topaz. View results for various procedures in polishing Topaz…
Faceting Survey Results – Polishing – Tourmaline
Faceting Survey Results for Polishing Tourmaline: Get polishing methods for Tourmaline. View results for various procedures in polishing Tourmaline…
Faceting Survey Results – Polishing – Beryl
Polishing Beryls: Get successful tips, suggestions, and methods to polish a Beryl laptype, synthetic emerald laptype, or any gemstone of the…
Gem Price Guide
A guide for the price of various gemstones that is based on various sources for commonly traded goods. However, gems are sold outside this range…
IGS Become Member