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 guide, photos, videos & research.
For Further Reading. Gems articles & Gemology (G&G), GIA’s professional journal, provides in-depth feature evaluation on the latest of gem gemological quality to research, developments from gem in treatments, gem production, synthetics, market sources, and more.
Analysis & Grading - GIA.edu
GIA is the world’s most trusted name in diamond grading and gem identification. With objectivity and expertise as its hallmarks, GIA ensures the integrity and accuracy of every report it issues. GIA tests every material submitted to determine whether it is natural or not, and discloses any treatments discovered during our examination.
Gem Identification - GIA
Practice identifying more than 60 species of gemstones, distinguishing natural from laboratory-grown gems and detecting gem treatments. You will carry out testing procedures and techniques on sets of practice stones.
Chart: Inclusions in Natural, Synthetic, and Treated Emerald
Jul 25, 2014 · Over the past 50 years, the observation of inclusions in colored gemstones, particularly emerald, has become an essential foundation for identification, quality analysis, and origin determination. This chart contains a selection of photomicrographs of natural, synthetic, and treated emeralds.
GIA iD100 Gem Testing Device - Gemological Institute of America
Quick Results - No Interpretation Needed. No graphs, colors, reference charts, or data to interpret to determine if your stone is a natural diamond or not. In just two seconds you get a simple "Pass" for natural diamonds and "Refer" for stones that need more testing.
Sapphire Gemstone | Sapphire Stone - GIA
GIA Gemological Identification Reports assess the characteristics of a stone (weight, measurements, shape, cutting style and color), determine if it is natural or laboratory-grown, indicate detectable treatments and, at the client’s requests, will issue an opinion on geographic origin, when possible.
Turquoise Gemstone | Turquoise Stone - GIA
View the Gem Encyclopedia. Turquoise is an opaque colored stone that can be marketed both as a gem for jewelry & is found in only dry & barren regions on earth.
Birthstones | Birthstone by Month - GIA
Birthstones for each month. Birthstones are a fun, popular and colorful introduction to the world of gemstones. They appeal to audiences around the world regardless of gender, age, nationality or religion. Birthstones carry secrets, attributes and lore that are unique to each gemstone.
Explore the Gem Encyclopedia
Each has its own page with standout facts, information on treatments, synthetics and imitations, famous stones and a map of gem localities. It also includes eye-catching photography, video and a streamlined, content-rich format.