Blue Diamonds
Fancy blue diamonds are available in a wide range of shades, from the blue of the sky to a more "steely" colour than sapphire.
Limited quantities of fancy blue diamonds are recovered from the Argyle mine.
Diamond Cutting
As every diamond is different, a stone must first be carefully examined by the cutter and then marked for cutting. Of all the cuts, the most popular is the round brilliant because of its ability to give a stone the greatest possible brilliance and fire with the most minimal amount of weight loss. The following cutting and polishing procedures uses the round brilliant cut as an example. The rough diamond is divided into two parts by sawing or cleaving. Most stones are sawn across the "grain" (visible evidence of the diamond's crystal structure) by a paper-thin metal disc coated with diamond dust revolving at high speed or by laser. The stones that are marked for cleaving are split along the grain by a single blow from a steel blade. After cleaving or sawing, the corners of the diamond a...
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