Cut
The cut of a Diamond is the only property, which is totally dependent on man. Cut refers not only to the shape and style of the diamond, but its proportions, symmetry, and finish or make. Proportions and angles influence the internal reflection of light as well as the dispersion of light leaving the diamond. This determines the brilliance and fire (brightness and sparkle) of the diamond, and ultimately it's perceived beauty.
Cut therefore, is actually one of the most important aspects to consider when choosing your diamond. A diamond can be cut for maximum weight recovery or maximum brilliance and beauty. Invariably one is traded of at the expense of the other. Although poor makes sell at a discount in the trade, realistically the unsuspecting retail customer will pay the same price regardless of make.
For Round brilliants there are several so called optimum cuts all with slightly different proportions. These are based on scientific formulas to maximize the return of light from the diamond. Ultimately taste and preference for the overall appearance determine the buyer's choice.

The diamond trading floor that gives all diamond buyers direct access to DCLA guaranteed diamonds from Australian diamond dealers.
latest news
Friday 26 June, 2009
'HOW TO BUY A DIAMOND' WORKSHOP SATURDAY 25 JULY
Diamond buying made easy...register now for the next 2-3 hour hands-on workshop covering diamond quality and diamond buying taught by the Diamond Certification Laboratory of Australia.
Wednesday 17 June, 2009
SYNTHETIC DIAMONDS ON THE MARKET IN AUSTRALIA?
A synthetic diamond has been identified by the DCLA, on the heels of the recent discovery of numerous treated diamonds in Australia.
Friday 29 May, 2009
BLUE DIAMOND FETCHES RECORD PRICE FOR GEM
A rare natural fancy vivid blue diamond sold for a world record price of almost US$9.5 million (AU$12.2 million) at auction in Geneva this month.