Gourt > Science > Earth Sciences > Geology > Rocks and Minerals > Gemstone
- This article is about gemstones as jewelry or decorative art. For other uses of the word see gemstone (disambiguation).
Characteristics and classification
Gemstones are described by gemologists using technical specifications. First, what is it made of, or its chemical composition. Diamonds for example are made of carbon (C), rubies of aluminium oxide (Al2O3). Next, many gems are crystals which are classified by crystal system such as cubic or trigonal or monoclinic. Another term used is habit, the form the gem is usually found in, for example diamonds which have a cubic crystal system are often found as octahedrons.
More on [ Gemstone ]
Gemstones :: Jewelry
Mineral Exploration and Extraction :: Mining and Drilling
Minerals :: Rocks and Minerals
Shopping :: Rocks and Minerals
RT @johnrrymer: on a call with @mgualtieri to discuss Gemstone's strategy in distributed caching.
mgualtieri (mgualtieri) Mon, 23 Nov 2009 16:13:33 -0000
RT @johnrrymer: on a call with @mgualtieri to discuss Gemstone's strategy in distributed caching.
NATURAL GEMSTONE BRACELET - CARNELIAN (ENERGY SERIES) http://openlist.ca/v.asp?msgid=702110&catid=4&subcatid=11478&c=1
vancouverjewels (Vancouver Jewelry) Mon, 23 Nov 2009 16:05:13 -0000
NATURAL GEMSTONE BRACELET - CARNELIAN (ENERGY SERIES) http://openlist.ca/v.asp?msgid=702110&catid=4&subcatid=11478&c=1
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GemsDirectLLC (Gems Direct LLC) Mon, 23 Nov 2009 16:03:40 -0000
Get them now - STERLING SILVER RUBY GEMSTONE FASHION JEWELRY RING SZ 8 http://bit.ly/6tlkA2
on a call with @mgualtieri to discuss Gemstone's strategy in distributed caching.
johnrrymer (John Rymer) Mon, 23 Nov 2009 16:03:18 -0000
on a call with @mgualtieri to discuss Gemstone's strategy in distributed caching.
RT @EarthMotherHeal: http://bit.ly/8UYcHU Goddess of Healing Fluorite Necklace Gemstone jewelry with healing energy
braconsultant (Your Bra Consultant) Mon, 23 Nov 2009 15:52:16 -0000
RT @EarthMotherHeal: http://bit.ly/8UYcHU Goddess of Healing Fluorite Necklace Gemstone jewelry with healing energy
http://bit.ly/8UYcHU Goddess of Healing Fluorite Necklace Gemstone jewelry with healing energy
EarthMotherHeal (Donna DeVane) Mon, 23 Nov 2009 15:50:49 -0000
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Mineral Collection - Pictures and short descriptions of gems and minerals found at the Smithsonian.
Meta Description: [ Smithsonian Gem and Mineral Collection ]
Mineral Society - Gold and Mineral Society in Florida.
Meta Description: [ Florida Gold Coast Gem & Mineral Society ]
Bluechart - A gem identification chart for $18.
Meta Description: [ BlueChart is the most complete and practical gemstone chart for a quick and accurate identification of more than 200 natural, enhanced, synthetic gemstones and imitations. ]
Caribbean Gemological Institute - Caribbean jewelers organization includes jewelry, shopping and travel tips..
Dan Dennis - Author of Gems: A Lively Guide for the Casual Collector.
FTC - FTC Guides for jewelry and precious metals.
Gem Hut - Hundreds of descriptions for gems, minerals, and rare metals. Pictures, hardness, and composition.
Meta Description: [ Serving the Internet with fine and rare colored gemstones from around the world. ]
Gemology Tools - Software for the professional gemologist or gemology student/enthusiast.
Meta Description: [ Gemology Tools is computer software with extensive gemstone information and tools for the professional gemologist or gemology enthusiast/student. Gem identification and more. ]
Gems and Precious Stones - An on-line gem and jewelry course at UC Berkeley.
Gemstone Forecaster Newsletters - Analyzes Burma ruby and sapphire gems and collector gemstone markets.
GeoNord - Gem and mineral site from Sweden.
National Gemstone - Introduction to collecting and investing in gemstones and colored diamonds, with descriptions of the types most widely traded.
NOVA - Gemstone primer with photos and vital information regarding gemstones.
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Photomicrography by Erik Carlson - Photomicrography of diamonds and other gemstones.
Secret Jewelry Collection - A Japanese collector's site of jewelry, minerals and gemstones.
Meta Description: [ The site with beautiful pictures for studying various jewelry (Minerals, Gemstones, Gems, Accessories) which has been collected by my hobby. ]
Secrets of the Gem Trade. The Connoisseur's Guide To Precious Gemstones. - A new gem book by by R. W. Wise.
Meta Description: [ Secrets of the gem trade; the connoisseur's guide to precious gemstones by Richard W. Wise, secrets of connoisseurship ]
The Amber Ranch - Dominican rough blue amber for jewellers and collectors.
Meta Description: [ Rough Amber and Amber jewelry supplier supplier directly from the mines, Dominican manufacturer offers custom crafted Dominican amber cabochons and amber jewelry, Dominican rough and raw amber from the Dominican mines in the Caribbean, amber earrings, amber bracelets, amber rings, amber chains, a... ]
The Image - Mineral and gemstone galleries. Physical properties and historical facts for minerals and gemstones.
University of Texas Gem Class - Gem and Mineral class at the University of Texas, Austin.
Meta Description: [ Extensive course notes and links for a Gem and Gem Minerals class at the University of Texas at Austin. ]
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