Database updated: 17 May 2013.
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Gemstone weight distribution

Gemstone web market supply: weight distribution analysis, November 2011.

Sapphires
Web market supply: Sapphires weight distribution, Nov 2011

Rubies
Web market supply: Rubies weight distribution, Nov 2011

Emeralds
Web market supply: Emeralds weight distribution, Nov 2011

Spinels
Web market supply: Spinels weight distribution, Nov 2011

Tanzanites
Web market supply: Tanzanites weight distribution, Nov 2011

Tourmalines
Web market supply: Tourmalines weight distribution, Nov 2011
 
 
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