Another important characteristic when evaluating diamonds is clarity. Clarity refers to the number, location, size and nature of inclusions that occur inside the diamond. The most pure of diamonds is the flawless, internally flawless and (VVS) very, very small inclusions. These diamonds command a very high price due to their rarity. Medium to very good clarity diamonds such as (SI) small inclusions or (VS) very small inclusions demonstrate the same degree of brilliance similar to a flawless diamond. Only a trained expert with a 10x loupe can examine and determine the exact clarity of these diamonds. If the inclusions are apparent to the naked eye, then the grade will be (I) or imperfect. Inclusions or blemishes give each diamond a distinct fingerprint that helps in making each diamond truly unique.
FL-FI Flawless, Internally Flawless
No inclusions visible (by an expert) under 10x magnification.
VVS1-VVS2 Very, Very Slight inclusions
Minute - extremely difficult to find under 10x magnification.
VS1-VS2 Very Slight inclusions
Minor - difficult to find under 10x magnification.
SI1-SI2 Small Inclusions
Noticeable, relatively easy to find under 10x magnification.
I1-I2 Imperfect
Obvious under 10x magnification - just visible to the naked eye.
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