Every diamond is unique. A diamond certificate is a report setting out unique features of a diamond including details of the diamond’s cut , colour , clarity and carat weight.
When choosing a diamond, it is important to view a diamond certificate to gain comfort that the diamond has undergone professional examination. However, it is equally important to understand which organisation prepared the certificate as this can significantly influence the diamond’s quality and value.
There are various gemological laboratories which make diamond certificates, each with their grading system. Thus, a diamond’s grading may fluctuate from one laboratory to another.
The gemological laboratory that is most respected in the industry is the Gemological Institute of America (GIA). GIA set the criterion for grading diamonds which as been adopted by the industry. Thus GIA certificates are the most recognised and highly regarded in the market. As GIA has the most stringent grading system, you can gain greater comfort that the price of a GIA certified diamond reflects its value.
Our certified diamonds come with a complimentary diamond certificate from GIA t o help ensure you gain complete confidence in your purchase.Please contact us for an obligation free quote.
DIAMETER (mm) | AUSTRALIA | USA | EUROPE |
14.1 | F | 3 | 44 |
14.3 | F 1/2 | 45 | |
14.5 | G | 3 1/2 | |
14.7 | G 1/2 | 46 | |
14.9 | H | 4 | 47 |
15.1 | H 1/2 | ||
15.3 | I | 4 1/2 | 48 |
15.5 | I 1/2 | ||
15.7 | J | 5 | 59 |
15.9 | J 1/2 | 50 | |
16.1 | K | 5 1/2 | |
16.3 | K 1/2 | 51 | |
16.5 | L | 6 | 52 |
16.7 | L 1/2 | ||
16.9 | M | 6 1/2 | 53 |
17.1 | M 1/2 | ||
17.3 | N | 7 | 54 |
17.5 | N 1/2 | 55 | |
17.7 | O | 7 1/2 | |
17.9 | O 1/2 | 56 | |
18.1 | P | 8 | 57 |
18.3 | P 1/2 | ||
18.5 | Q | 8 1/2 | 58 |
18.7 | Q 1/2 | ||
18.9 | R | 9 | 59 |
19.1 | R 1/2 | 60 | |
19.3 | S | 9 1/2 | 61 |
19.5 | S 1/2 | ||
19.7 | T | 10 | 62 |
19.9 | T 1/2 | 63 | |
20.1 | U | 10 1/2 | |
20.3 | U 1/2 | 64 | |
20.5 | V | 11 | 65 |
20.7 | V 1/2 | ||
20.9 | W | 11 1/2 | 66 |
21.1 | W 1/2 | ||
21.3 | X | 12 | 67 |
21.5 | X 1/2 | ||
21.7 | Y | 12 1/2 | 68 |
21.9 | Y 1/2 | 69 | |
22.1 | Z | 13 | 70 |