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New to gemstones? Curious about the different kinds of gemstones? Check out our gemstones list and discover a world of precious and semi-precious stones.
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 polished, is used to make jewelry or other adornments.
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.
26 de nov. de 2019 · An alphabetical list of precious and semiprecious gemstones, complete with photographs and a look at their chemical composition.
6 de may. de 2024 · Precious stones, also known as precious gemstones and precious gems, are naturally occurring minerals that possess notable beauty, rarity, and durability. Traditionally, only four gemstones in the world are considered precious: diamonds, sapphires, rubies, and emeralds.
9 de jun. de 2020 · The standard four precious gemstones aren’t the only beautiful gems. Plus, plenty of semi-precious stones are more valuable! Learn every precious and semi-precious gemstone and what sets them apart.
A complete list of precious and semi-precious gemstones: Showing over 200 gemstone varieties, our gemstone index will help you find the perfect colored stone for your jewelry, collecting and crystal healing needs.
This is our complete guide to crystal meanings with over 100 different semi-precious stones and crystals, precious gems, minerals and their metaphysical symbolism, healing properties, powers, and spiritual meaning.
Colored Stones Unearthed Laboratory Growth of Gem Materials and the Attempt to Replicate Nature Provides an overview of processes for synthesizing gem materials and explains how unique growth conditions enable them to be separated from naturally formed gems.
A rare and valuable pinkish-orange sapphire named from the Sinhalese for lotus blossom. Facts. Mineral: Corundum. Chemistry: Al 2 O 3. Color: Every color but red. Refractive index: 1.762 to 1.770. Birefringence: 0.008 to 0.010. Specific gravity: 4.00. Mohs Hardness: 9. Treatments.
