The cut of a diamond is crucial to its ability to reflect light. It is the one C governed by man’s skill rather than by nature – and it has significant influence on the value of a diamond. If a diamond is cut too deep, light escapes downwards and the centre will appear dark – absorbing rather than reflecting light. A very shallow cut results in light escaping through the base, causing the diamond to look glassy, watery and dull, even grey. However, when a diamond is cut to perfect proportions, light entering from any direction is reflected through the top of the stone giving it maximum fire and brilliance.
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