Diamond

Venus Grading System (VGS®)

Sub-dividing clarity grades (Not all SI1 are same)
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For each weaker clarity, the visual difference between the two clarity grades increases. With experience, experts can judge whether a stone, for instance, qualifies as a better SI1 or a weaker SI1. To indicate these distinctions, Venus Jewel classifies clarity grades into 'better' (+), 'standard' ( ), and 'weaker' (-) categories within each grade.
Additionally, since SI2 has a broad range, it is further subdivided into SI2 and SI3, each with its own subgrades of 'better' (+), 'standard' ( ), and 'weaker' (-).
Sample Image Flawless
Sample Image Internally Flawless
Sample Image Very Very Slightly Included
Sample Image Very Slightly Included
Sample Image Slightly Included
Sample Image Included
Industry Standard FL IF VVS1 VVS2 VS1 VS2 SI1 SI2 SI3 I1 I2 I3
Venus FL IF VVS1 VVS2+ VS1+ VS2+ SI1+ SI2+ SI3+ I1+ I2+ I3+
      VVS2 VS1 VS2 SI1 SI2 SI3 I1 I2 I3
        VS1- VS2- SI1- SI2- SI3- I1- I2- I3-
Sample price difference:
SI1- SI1 SI1+

SI1- saves you 2 - 6 % vs Base market price.

SI1+ fetches 1.5 - 3% premium for superior purity.

Indicative price variations across diamonds with different Clarity grades, while all other parameters remain constant, are illustrated above.