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GIA Gem Encyclopedia | Complete List Of Gemstones Gem Encyclopedia is a virtual journey through the science and lore of Gemstones from across the globe Each Gem page features Gemological Information, a Buyer’s guide, photos, videos research
List of Gemstones: Precious and Semi-Precious Stones - Gem . . . Discover everything about amethyst gemstones — from their meaning and Ametrine is a variety of quartz that displays bands of both amethyst p Ammolite is a rare, iridescent, gem-quality material cut from the foss Large colorless crystals of Analcime are a great rarity although small
Gemstone - Wikipedia 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 [1][2][3] Certain rocks (such as lapis lazuli, opal, and obsidian) and occasionally organic materials that are not minerals (such as amber, jet, and
Gemstone List - Names, Colors Types of Gems | GemSelect Gemstone List: A Complete Gemstones List with Images Our gemstone list features over 200 precious and semi-precious varieties, a comprehensive index to find the ideal colored stone Whether for jewelry, collecting, or crystal healing, this gemstone list guides you to the perfect natural gem for your needs
Gemological Institute Of America | All About Gemstones - GIA Learn about the principles, mechanisms, and characteristics of luminescence that create the impressive and memorable glow of gemstones Learn the latest trends by GIA on the laboratory-grown diamond industry Learn the latest on Madagascar sapphires and demantoid garnets from Wim Vertriest, GIA Manager of Field Gemology
What is a Gem? - International Gem Society What is a Gem? Even the most general definition of a gem has many exceptions Learn what qualities have been used to identify gemstones both scientifically and popularly