13th February 2009 - 09:23 AM
QUOTE (bing511+Feb 13 2009, 02:51 PM)
any one knows about anything about sapphire crystals? let's discuss about it, how's the market of sapphire crystal?
Most colours except red, which are rubies.
Aluminium oxide is white or colourless, the colour of Saphires comes from impurities (Fe, Ti, Cr).
What, precisely were you wanting to know?
13th February 2009 - 09:39 AM
Addendum: Value (and market demand) varies according to what quality, and which market you're selling to - whether it's for electronics (as a substrate) or as a gemstone.
2nd May 2009 - 06:43 PM
Or for its optical qualities. You can buy relatively large water-clear sapphire windows from Edmunds Optical for reasonable prices.