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Reference Values of Gems
Database updated: 1 July 2015
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Amethyst: average retail prices, Jul 2015


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Valuation date: 30 Jul 2015
Value chart for Amethyst. Data valid till: 13 Aug 2015
Values in USD per carat; ref. clarity = VVS, ref. cut = Excellent

Color Color Description; Occurrence 1 ct. 3 ct. 5 ct. 10 ct. 30 ct.
203 - medium reddish Purple; very slightly brownish203 - medium reddish Purple; very slightly brownish
Alternative name, occurrence category: Rare
66.5267.4268.3270.5779.55
180 - medium dark Violet; strong180 - medium dark Violet; strong
Alternative name, occurrence category: Common
43.5644.1544.7446.2152.09
186 - medium dark bluish Purple; strong186 - medium dark bluish Purple; strong
Alternative name, occurrence category: Common
41.8242.3942.9544.3750.02
185 - medium bluish Purple; very slightly greyish185 - medium bluish Purple; very slightly greyish
Alternative name, occurrence category: Common
23.2523.5723.8824.6727.81
181 - light Purple; very slightly greyish181 - light Purple; very slightly greyish
Alternative name, occurrence category: Common
14.6214.8115.0115.5117.48
187 - very light Purple187 - very light Purple
Alternative name, occurrence category: Common
9.609.739.8610.1811.48
079 - very light Green. Irradiated.079 - very light Green. Irradiated.
Alternative name, occurrence category: Prasiolite. Common
18.3818.6318.8819.5021.98

Color grades system


Approximate clarity factors:

Clarity grade VVS VS SI1 SI2 I1 I2 I3 OPQ
Value factor1.0000.7840.6180.4240.342---------

Clarity grade patterns


Gemstone Appraisal:  Amethyst  

Value Charts: printable version  

Gems info: Amethyst  


 
 
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