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


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Valuation date: 31 May 2016
Value chart for Amethyst. Data valid till: 14 Jun 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
36.0237.5939.1743.1158.86
180 - medium dark Violet; strong180 - medium dark Violet; strong
Alternative name, occurrence category: Common
31.2232.5833.9537.3651.02
186 - medium dark bluish Purple; strong186 - medium dark bluish Purple; strong
Alternative name, occurrence category: Common
30.2931.6132.9436.2549.49
185 - medium bluish Purple; very slightly greyish185 - medium bluish Purple; very slightly greyish
Alternative name, occurrence category: Common
15.0915.7516.4118.0624.66
181 - light Purple; very slightly greyish181 - light Purple; very slightly greyish
Alternative name, occurrence category: Common
7.748.078.419.2612.64
187 - very light Purple187 - very light Purple
Alternative name, occurrence category: Common
4.975.195.415.958.13
079 - very light Green. Irradiated.079 - very light Green. Irradiated.
Alternative name, occurrence category: Prasiolite. Common
11.7812.2912.8114.0919.24

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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