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Reference Values of Gems
Database updated: 1 Feb 2016
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Amethyst: average retail prices, Feb 2016


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Valuation date: 13 Feb 2016
Value chart for Amethyst. Data valid till: 27 Feb 2016
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
35.3036.6437.9841.3354.75
180 - medium dark Violet; strong180 - medium dark Violet; strong
Alternative name, occurrence category: Common
30.5931.7632.9235.8247.45
186 - medium dark bluish Purple; strong186 - medium dark bluish Purple; strong
Alternative name, occurrence category: Common
29.6830.8131.9434.7546.03
185 - medium bluish Purple; very slightly greyish185 - medium bluish Purple; very slightly greyish
Alternative name, occurrence category: Common
14.7915.3515.9117.3222.94
181 - light Purple; very slightly greyish181 - light Purple; very slightly greyish
Alternative name, occurrence category: Common
7.587.878.168.8811.76
187 - very light Purple187 - very light Purple
Alternative name, occurrence category: Common
4.875.065.245.717.56
079 - very light Green. Irradiated.079 - very light Green. Irradiated.
Alternative name, occurrence category: Prasiolite. Common
11.5411.9812.4213.5117.90

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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