Diamonds are assessed according to the four c's:

1. Carat Weight

1 carat equals 0.2 grams.

2. Cut

The quality of a cut is assessed in terms of it's proportions, symmetry and polish.

3. Colour

Unless regarded as a 'fancy' coloured diamond, all diamonds are graded on their lack of colour.

4. Clarity

Diamonds are graded on their freedom from inclusions (within the stone) and blemishes (found on the surface of the stone). They are assessed using 10x magnification.

Please note the four cs of a diamond cannot be fully assessed whilst the stone is mounted. The approximate gradings provided in the condition reports are estimations, made by the specialists whilst the stones were mounted and are for guidance only. If a stone has been unmounted and assessed in a gemmological laboratory, this will be noted in the cataloguing/condition report.