Gem Cleaning Resource - Treasure Gems and Coins - what is uncut garnet gemstone worth? ,Let the fun begin! Cleaning instructions for your dirty, uncut and uncleaned rough mine run gems.Optical Properties of Gemstones - bwsmigel.infoGEOLOGY 115. OPTICAL PROPERITES OF GEMS. Optical properties are those which are related to the behavior of light, on, or in, a gemstone. Some of these can be seen ,
Diamond - Wikipedia
The conditions for diamond formation to happen in the lithospheric mantle occur at considerable depth corresponding to the requirements of temperature and pressure....
Emerald - Wikipedia
Emerald tends to have numerous inclusions and surface breaking fissures. Unlike diamond, where the loupe standard, i.e. 10× magnification, is used to grade clarity ......
Shelby Gem Factory - Official Site
We REALLY are the only company in the world that actually makes uncut gems, facets them, mounts them in gold, and invites you into our factory/theater/showroom to see ......
Full text of "NEW " - Internet Archive
Search the history of over 279 billion web pages on the Internet....
Diamond Guide at HSN.com
Diamond Information. Diamonds are precious gemstones and symbolize love, luxury and everlasting commitment. Only 20% of the world''s diamonds are of gemstone quality....