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Reference Values of Gems
Database updated: 15 Jan 2017
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Reference clarity patterns for colored gemstones

 

Eye clean 1 clarity pattern   VVS, Eye clean 1

Eye clean 2 clarity pattern   VS, Eye clean 2

Slightly included 1 clarity pattern   SI1, Slightly included 1

Slightly included 2 clarity pattern   SI2, Slightly included 2

Included 1 clarity pattern   I1, Included 1

Included 2 clarity pattern   I2, Included 2

Included 3 clarity pattern   I3, Included 3

Opaque clarity pattern   OPQ, Opaque

Horsetail 1 clarity pattern   HTL1, Rich Horsetail (used for Russian demantoids)

Horsetail 2 clarity pattern   HTL2, Weak Horsetail (used for Russian demantoids)


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