Gemstone Doublets, Triplets, and Other Assembled Stones
Made from two or more materials, assembled gems can make durable and affordable jewelry. Learn more about gemstone doublets, triplets, and other…
Articles by
Barbara Smigel
Ruby Value, Price, and Jewelry Information
One of the most popular traditional jewelry stones, ruby is exceptionally durable. Its colors — always red — can reach vivid levels of saturation.…
Moldavite Value, Price, and Jewelry Information
Moldavite is a transparent to translucent olive to bottle green tektite, first found in 1787 at the Moldau River in Czechoslovakia. In general,…
Fossilized Organisms
Most people who have an interest in gemstones or nature have seen petrified wood, but fewer are aware of the many other types of fossilized organisms…
Iolite Value, Price, and Jewelry Information
This stone, which represents one of the few relatively available and affordable blue stone options, is rapidly gaining in popularity. Arguably…
IGS Become Member