202 S. Michigan Street
South Bend, Indiana 46601
Phone: 574.287.1427
Hours:
Monday - Friday
10:00 a.m. - 6:00 p.m.
Color & Quality Grading Systems
Comparative Color Grading Systems
|
G.I.A. |
United Kingdom | |
| Colorless | D | Finest White |
| Colorless | E | Finest White |
| Colorless | F | Fine White |
| Near Colorless | G | Fine White |
| Near Colorless | H | White |
| Near Colorless | I | Commercial White |
| Near Colorless | J | Commercial White |
| Faint Tint | K | Top Silver Cape |
| Faint Tint | L | Silver Cape |
| Faint Tint | M | Light Cape |
| Very Light Yellow | N | Light Cape |
| Very Light Yellow | O | Cape |
| Very Light Yellow | P | Cape |
| Very Light Yellow | Q | Cape |
| Very Light Yellow | R | Cape |
| Light Yellow | S-Z | Dark Cape |
| Intense Fancy Yellow (Rare) |
||
| Fancy Colors | ||
| Intense Fancy Colors (Rare) |
Comparative Quality Grading Systems
| G.I.A. |
United Kingdom |
| Flawless | Flawless |
| Internally Flawless | |
| VVS-1 VVS-2 |
VVS |
| VS-1 VS-2 |
VS |
| SI-1 SI-2 |
SI |
| Imperfect - #1 | 1st Pique' 2nd Pique' |
| Imperfect - #2 | 3rd Pique' |
| Imperfect - #3 | Spotted |
| Heavily Spotted | |
| Rejection |
Quality Grading Systems Definitions
| Flawless: |
No internal inclusions or external blemishes visible. * |
| Internally Flawless: |
No internal inclusions visible, but minor surface blemishes (such as wheel marks, small naturals on the girdle, or small scratches) would be evident. * |
| VVS-1 & VVS-2: |
Very, very slight inclusions evident but difficult to locate. * |
| VS-1 & VS-2: |
Very slight inclusions evident, more easily seen. * |
| SI:1 & SI-2: |
Slight inclusions readily seen under magnification but invisible to the unaided eye.* |
| Imperfect - #1: |
Inclusions just visible to the unaided eye of an expert. * |
| Imperfect - #2: |
Inclusions easily seen by the unaided eye of an expert. * |
| Imperfect - #3: |
Inclusions large and easily seen.* |
* All examinations take place under 10x magnification utilizing an eye loupe or similar magnifier by an expert in the field.
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