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COLOR GRADE | CLARITY GRADE | CUT GRADE | |||
---|---|---|---|---|---|
AAA | Top Colorless the D-to-E color range from GIA. |
AAA | Almost no inclusion can be confirmed even with a 10x magnifying glass. | AAA | The highest ranking shine among the gem. |
AA | Colorless the F-to-H color range from GIA. |
AA | With a 10x magnifying glass, a slight inclusion can be seen. | AA | Only when compared to those of AAA rank, it can be confirmed that the brightness is slightly inferior. |
A | Near Colorless the I-to-L color range from GIA. |
A | If you squint with the naked eye, a slight inclusion can be confirmed. | A | As a jewel, it has enough shine. |
B | Very Light the lesser N color from GIA. |
B | You can see several inclusions with the naked eye. | B | You can see that the terri is slightly sweet. |
C | Light Color the lesser S color from GIA. |
C | The existence of inclusion can be clearly confirmed with the naked eye. | C | It doesn’t look bright because it is cloud. |
ISO-8653 | US | JPN |
---|---|---|
41 | 1.75 | 1 |
42 | 2 - 2.25 | 2 |
43 | 2.5 | 3 |
44 | 2.75 - 3 | 4 |
45 | 3.25 | 5 |
46 | 3.75 | 6 |
47 | 4 | 7 |
48 | 4.5 | 8 |
49 | 4.75 - 5 | 9 |
50 | 5.25 | 10 |
51 | 5.5 - 5.75 | 11 |
52 | 6 | 12 |
53 | 6.25 - 6.5 | 13 |
54 | 6.75 - 7 | 14 |
55 | 7.25 | 15 |
56 | 7.5 | 16 |
57 | 7.75 - 8 | 17 |
58 | 8.25 - 8.5 | 18 |
59 | 8.75 | 19 |
60 | 9 | 20 |
61 | 9.5 | 21 |
62 | 9.75 - 10 | 22 |
63 | 10.25 | 23 |
64 | 10.5 - 10.75 | 24 |
65 | 11 | 25 |