#jewelleryfacts365 287/365 Diamond facts

Tuesday, May 16, 2017

After polishing, the diamond is re-examined for possible flaws, either remaining or induced by the process. Those flaws are concealed through various diamond enhancement techniques, such as re-polishing, crack filling, or clever arrangement of the stone in the jewelry. Remaining non-diamond inclusions are removed through laser drilling and filling of the voids produced.

Cracks and fractures in a diamond reduce its clarity, but can be treated by filling. Fracture filling utilises a glass-like material, which has similar optical properties to that of diamond. It will improve the diamond’s appearance by almost two clarity grades but is not a permanent treatment. Most obvious evidence of fracturefilled diamonds can be found in the bright flashes of changing colour that can be seen under proper lighting. Other evidence is the presence of bubbles in the fracture of the filler, or ‘crackled appearance’ of the filler. All these can be picked up by 10x magnification. [source].


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