Database updated: 18 April 2014.
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Quartz: average retail values, Apr 2014


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Valuation date: 24 Apr 2014
Value chart for Quartz. Data valid till: 08 May 2014
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.
001 - very light Red (light pink)
Alternative name, occurrence category: common
10.3710.3710.3710.3710.37
030 - dark reddish Orange
Alternative name, occurrence category: Common
4.074.074.074.074.07
024 - medium light reddish Orange; very slightly brownish
Alternative name, occurrence category: common
3.833.833.833.833.83
048 - medium light Yellow; slightly brownish
Alternative name, occurrence category: common
3.993.993.993.993.99
063 - light yellowish Green; very slightly greyish
Alternative name, occurrence category: common
3.803.803.803.803.80
223 - colorless
Alternative name, occurrence category: common
2.742.742.742.742.74

Approximate clarity coefficients:

Clarity grade VVS VS SI1 SI2 I1 I2 I3 OPQ
Value coefficient1.0000.8210.732---------------

 

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