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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.
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 · Alphabetical List of Precious and Semiprecious Gemstones. By. Anne Marie Helmenstine, Ph.D. Updated on November 26, 2019. A gemstone is a crystalline mineral that can be cut and polished to make jewelry and other ornaments. The ancient Greeks made a distinction between precious and semiprecious gems, which is still used.
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.
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.
6 de may. de 2024 · Traditionally, only four gemstones in the world are considered precious: diamonds, sapphires, rubies, and emeralds. This guide explores the characteristics of each of the four precious gems, and also looks at the key differences and similarities between precious and semi-precious stones. Why Are Precious Gemstones Precious?
Colored Stone Grading Lab ... Diamonds are among nature’s most precious and beautiful creations. Emerald. Emerald is the bluish green to green variety of beryl, a mineral species that includes aquamarine. Citrine. Citrine is the transparent, pale yellow to brownish orange variety of quartz.
20 de ago. de 2023 · 2 Ruby. Ruby is a red precious stone that comes from the mineral group corundum, which is second only to diamond in hardness (9 out of 10 in the Mohs scale). An extremely rare gem, the red gemstone is more expensive than white diamond, and is the second most valuable precious stone in the world next to red diamond.
Sapphire is the birthstone for September and the gem of the 5th and 45th anniversaries. Kashmir. Intensely saturated and velvety, rare sapphires from Kashmir set the standard for blue. Royal Blue. The world’s most famous engagement ring: Kate Middleton’s and Princess Diana’s sapphire. Padparadscha.
