Wikipedia talk:WikiProject Gemology and Jewelry/Gemstones

Moved from WP main page: ***Moisanite -- Please remove. Moissanite IS NOT A DIAMOND SIMULANT!!! IT IS A SEPARATE CATEGORY of cultured jewelry.

Please see comment at SauliH 02:20, 31 January 2007 (UTC)

Onyx page starts with "Onyx is a cryptocrystalline form of quartz. The colors of its bands range from white to almost every color (not including shades such as purple, blue, or black). Commonly, specimens of onyx available contain colors of white, tan, and brown. Sardonyx is a variant in which the colored bands are sard (shades of red) rather than black."

So is Onyx typically black or not. It's not clear here. Then the Onyx disambiguation page says Onyx is a black mineral. Someone in the know should clean this up.

Derbyshire spar
Are Derbyshire spar and Blue John the same mineral? The Derbyshire Blue John article (which I created from material originally at Blue John Cavern and Fluorite) seems to think so. I'm no geologist so I've not changed anything. Dave.Dunford (talk) 20:15, 15 March 2012 (UTC)

TOURMALINE [[ALL  COLOURS}}
PLease explain  to me   via my E  Mail    ...Your   colour  grading  etc  describes  Tourmalines  as  catogorised  into  the SEMI--PRECIOUS   valuation  chart!!! If a Paraiba  green unsigned comment added by 197.111.242.45 (talk) 15:15, 18 May 2013 (UTC)