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Reference Values of Gems
Database updated: 01 November 2017
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Amethyst: average retail prices, Nov 2017


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Valuation date: 22 Nov 2017
Value chart for Amethyst. Data valid till: 06 Dec 2017
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
34.3535.0135.6637.3143.90
180 - medium dark Violet; strong180 - medium dark Violet; strong
Alternative name, occurrence category: Common
29.7730.3430.9132.3438.05
186 - medium dark bluish Purple; strong186 - medium dark bluish Purple; strong
Alternative name, occurrence category: Common
28.8829.4329.9931.3736.91
185 - medium bluish Purple; very slightly greyish185 - medium bluish Purple; very slightly greyish
Alternative name, occurrence category: Common
14.3914.6714.9415.6318.39
181 - light Purple; very slightly greyish181 - light Purple; very slightly greyish
Alternative name, occurrence category: Common
7.387.527.668.019.43
187 - very light Purple187 - very light Purple
Alternative name, occurrence category: Common
4.744.834.925.156.06
079 - very light Green. Irradiated.079 - very light Green. Irradiated.
Alternative name, occurrence category: Prasiolite. Common
11.2311.4411.6612.2014.35

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  

Gems info: Amethyst  


 
 
 
 
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