Gemsociety.org

List of Gemstones: Precious and Semi-Precious Stones

WEBStar Sapphire. Star sapphire is a type of sapphire that displays asterism, a star-lik Gem Profile. Staurolite. Staurolite crystals in opaque cross shapes are popular gemstones. …

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URL: https://www.gemsociety.org/gemstone-encyclopedia/

Aquamarine Value, Price, and Jewelry Information

WEBA custom-designed, beautiful, bold ring with a 10 x 8 mm precision-cut radiant aquamarine, vintage detailing, and wide, multi-strand band. Photo by CustomMade.Used with …

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Malachite Value, Price, and Jewelry Information

WEBMalachite is a beautiful decorative stone. Its rich, patterned coloration in shades of green is unique among gems. Malachite's low hardness makes it easy to work, though it still …

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Beginner's Information

WEBGet Gemology Insights. Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID …

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Early History of Jewelry: Ancient Times to the 17th Century

WEBIran and the Mediterranean. The earliest traces of jewelry can be traced to the civilizations that bloomed in the Mediterranean and what is now called Iran around 3,000 to 400 BC. …

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Can Wearing Gems That Touch Your Skin Improve Your Health

WEBThe sweat and oil from your skin may also adversely affect the beauty and performance of the gem. Donald Clark, CSM IMG. Many gem designs, like the round brilliant cut shown …

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Serpentine Value, Price, and Jewelry Information

WEBSuch gems make very lovely and inexpensive jewelry pieces. All varieties of serpentine have very low hardness, which means they can be scratched very easily. Even …

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Topaz Symbolism and Legends

WEBHealth, Magic, and Topaz Symbolism. If worn on the left arm, some believed a topaz amulet could protect the wearer from dark magic. In addition, this could relieve arthritis …

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Lapidary Health Hazards and Safety Tips

WEBAvoiding Lapidary Health Hazards: Proper Ventilation and Protective Gear. The major health hazards lapidaries face are dust (inhalation, ingestion, and contact with the eyes) …

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Onyx Value, Price, and Jewelry Information

WEBThe popularity of onyx has led to some misuse of the term. The most common example of this is so-called "Mexican onyx," "limestone onyx," or "onyx marble." This material is …

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Jade Symbolism and Legends

WEBJade Symbolism. Both jadeite and nephrite have inspired beautiful works of art and a rich body of lore. Jade symbolism covers themes of harmony, eternity, and virtue. Ancient …

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Gemstone Toxicity Table

WEBThis table has toxicity ratings for 280+ gems, based on their composition and potential for bioactivity, as well as descriptions of the hazards they may pose. Gem faceters and …

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March Birthstone: Aquamarine

WEBThe modern birthstone representing March is aquamarine. Famed for millennia for its pure and even blue or blue-green color, potentially large size, and sparkling clarity, the …

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Is Uranium Glass Safe to Facet

WEBWhen present in glass, uranium imparts a yellow color and makes it very heavy. It would be a VERY BAD idea to cut uranium glass without knowing more about your piece. Most of …

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Carnelian Symbolism and Folklore

WEBBy Fara Braid. Ancient peoples all over the world favored the warm, reddish gem known as carnelian. This material was easy to cut into jewelry stones as well as carve into seals …

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Lab-Grown Diamonds FAQ

WEBChemically, physically, and optically, lab-grown diamonds are identical to natural ones. They're real diamonds with the same crystal structure and beautiful sparkle as natural …

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Emerald Enhancements: A Consumer and Trade Guide

WEBRemove the pressure cell and pressurize to about 100 psi. After cooling to room temperature, release the pressure, remove the emeralds, and wipe clean. Simple …

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Citrine Engagement Ring Guide

WEBSunny and bright, citrines symbolize health and happiness. Our citrine engagement ring guide will show you how to pick the perfect gem for your style. IGS may receive …

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