Diamond cutting and polishing In its rough form, a diamond is a lackluster, translucent crystal. Transforming a rough diamond into a sparkling jewel requires several procedures: cleaving, sawing, bruting, cross working and brillianteering.
Length to width ratio Most people prefer a pear-shaped diamond to have a length to width ratio of approximately 1.65:1. More elongated pear-shapes extend to a ratio of 1.80:1, whereas a more compact look is achieved with a ratio closer to 1.20:1
Sawing Diamond sawing is a twentieth century innovation. Although cleaving may be efficient, it limits the cutter to shaping the stone according to its natural lines of cleavage. Sometimes, diamonds have to be cut against a cleavage plane (against the grain). The diamond saw, a lubricated circular steel blade allows cutters to go against the grain of the diamond without shattering it.
Heart The ultimate symbol of love, the romantic Heart shape is a variation of the round brilliant cut diamond. Length to width ratio A heart-shaped stone is usually proportioned with equal length and width, approximating a ratio of 1:1. A length to width ratio of between 0.90:1 and 1.15:1 is preferred. The ratio should not fall below 0.80:1 or exceed 1.20:1
Oval cut The Oval cut is elliptical in shape and is a variation of the round brilliant cut diamond. The oval shaped diamond gives a flattering illusion of length to the finger and hand, and is popular among women with small hands or short fingers. It can also accentuate long, slender fingers. Length to width ratio Length to width ratio An oval cut with a length to width ratio of approximately 1.40 - 1.60 (the average of 1.50 is shown in blue) is the preference of most diamond buyers. For those who prefer a rounder look, choose a ratio closer to 1.15:1. For those who prefer a more elongated shape, look for a ratio of 1.70:1
Length to width ratio Most people prefer a pear-shaped diamond to have a length to width ratio of approximately 1.65:1. More elongated pear-shapes extend to a ratio of 1.80:1, whereas a more compact look is achieved with a ratio closer to 1.20:1
Sawing Diamond sawing is a twentieth century innovation. Although cleaving may be efficient, it limits the cutter to shaping the stone according to its natural lines of cleavage. Sometimes, diamonds have to be cut against a cleavage plane (against the grain). The diamond saw, a lubricated circular steel blade allows cutters to go against the grain of the diamond without shattering it.
Heart The ultimate symbol of love, the romantic Heart shape is a variation of the round brilliant cut diamond. Length to width ratio A heart-shaped stone is usually proportioned with equal length and width, approximating a ratio of 1:1. A length to width ratio of between 0.90:1 and 1.15:1 is preferred. The ratio should not fall below 0.80:1 or exceed 1.20:1
Oval cut The Oval cut is elliptical in shape and is a variation of the round brilliant cut diamond. The oval shaped diamond gives a flattering illusion of length to the finger and hand, and is popular among women with small hands or short fingers. It can also accentuate long, slender fingers. Length to width ratio Length to width ratio An oval cut with a length to width ratio of approximately 1.40 - 1.60 (the average of 1.50 is shown in blue) is the preference of most diamond buyers. For those who prefer a rounder look, choose a ratio closer to 1.15:1. For those who prefer a more elongated shape, look for a ratio of 1.70:1
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