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


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Valuation date: 31 Aug 2015
Value chart for Amethyst. Data valid till: 14 Sep 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
65.4566.3467.2469.4978.47
180 - medium dark Violet; strong180 - medium dark Violet; strong
Alternative name, occurrence category: Common
42.8643.4444.0345.5051.39
186 - medium dark bluish Purple; strong186 - medium dark bluish Purple; strong
Alternative name, occurrence category: Common
41.1541.7142.2843.6949.34
185 - medium bluish Purple; very slightly greyish185 - medium bluish Purple; very slightly greyish
Alternative name, occurrence category: Common
22.8823.1923.5024.2927.43
181 - light Purple; very slightly greyish181 - light Purple; very slightly greyish
Alternative name, occurrence category: Common
14.3814.5814.7715.2717.24
187 - very light Purple187 - very light Purple
Alternative name, occurrence category: Common
9.449.579.7010.0311.32
079 - very light Green. Irradiated.079 - very light Green. Irradiated.
Alternative name, occurrence category: Prasiolite. Common
18.0818.3318.5819.2021.68

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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