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Diamonds Hong Kong

Looking for a Diamond or Diamond ring in Hong Kong




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Clarity grading chart

Below are the foremost clarity grading scales ranged together with impressions of clarities drawn in top view on diamond diagrams.

Please see below the scale for important explanations on:

  Gemological Institute of America GIA American Gem Society Scandinavian SCAN.D.N. CIBJO Confederation International de la Bijouterie, Joaillerie, Orfevrierie des Diamantes. HRD Hoge Raad voor Diamant Diamond High Council Russian < 0.29 ct Russian > 0.30 ct
Main Grades <0.47 carats Sub grades >>0.47 carats
Flawless Diamond FL (flawless) 0 Loupe clean FL Loupe clean Free from inclusions and bearding Loupe clean. Inclusions that do not exceed 5 micron 1 1
Internally Flawless Diamond Internally flawless 1 IF
Very, Very Small Inclusions 1st degree VVS1 (very, very slightly included) VVS VVS1 VVS (VVS1, VVS2) Very, very small inclusion(s), very hard to find with a 10x loupe VVS1 - VVS2 Inclusions that are visible through table have average sizes of 12 micron (VVS1), 25 micron (VVS2), larger when visible through other facets 2 2
3 3
Very, Very Small Inclusions 2nd degree VVS2 (very, very slightly included) 2 VVS2 4
Very Small Inclusions 1st degree VS1 (very slightly included) 3 VS VS1 VS (VS1, VS2) Very small inclusion(s), which can hardly be found with a 10x loupe VS1 - VS2 Inclusions that are visible through table have average sizes of 40 micron (VS1), 70 micron (VS2); larger when visible through other facets 4 5
Very Small Inclusions 2nd degree VS2 (very slightly included) 4 VS2 5 6
Small Inclusions 1st degree SI1 (slightly included) 5 SI SI1 SI (SI1, SI2) Small inclusion(s), easy to find with a 10x loupe, not seen with the naked eye through the crown side S1 Inclusions that are visible through table have average sizes of 150 micron 7
Small Inclusions 2nd degree SI2 (slightly included) 6 SI2 7a
Imperfect 1st degree I1 (imperfect) 7-8 P P1 PI (Pique I) Inclusion(s) immediately evident with a 10x loupe, difficult to find with the naked eye through the crown side, not impairing brilliance P1 Inclusions which are visible through the crown-side have average sizes of 0.5 mm 6 9
Imperfect 2nd degree I2 (imperfect) 9 P2 PII (Pique II) Large and/or numerous inclusion(s), easily visible to the naked eye through the crown side and which slightly reduce(s) brilliance P2 Inclusions have average sizes of 1.5 mm; they slightly reduce brilliancy 7 10
Imperfect 3rd degree I3 (imperfect) 10 P3 PIII (Pique III) Large and/or numerous inclusion(s), very easily visible to the naked eye through the crown side and which reduce(s) brilliance P3 Inclusions have average sizes of 3 mm or larger; they reduce the brilliancy 8-9 11-12
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Jason Withers Diamonds

Gemologist, Diamond grader Master Jewellery designer, 149 Wickham Tce Brisbane 4000 | ph: +61 (07) 3839 4088
Diamond Rings Sydney Brisbane,Diamond Rings Studio Sydney City 407/350 George Street, Sydney NSW 2000 | ph: +61 (02) 9119 6488


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