Oval Cut Diamond

An Oval cut is an elliptical shaped brilliant cut. When well proportioned, Oval diamonds can elongate the finger while exhibiting a brilliance between that of a Round and a Marquise. Recommended length to width ratio for Ovals is between 1.33 to 1.66.

Special Characteristics of the Oval Cut Diamond Shapes

Like other fancy shapes, Oval cuts cannot be judged solely by the numbers. It is best to see the stones in person or view vendor photos. Look out for prominent bow ties. Well proportioned Oval cuts should have a minimal bow tie effect. A bow tie is a dark area across the center width of many fancy shapes—a result of varying pavilion angles. Bow ties show as light return that is blocked by the head of the viewer. Fancy shapes like Ovals, Marquises, Hearts, and Pears will have bow ties of varying degrees, and it is best to avoid excessively deep or shallow stones. Look for pleasing, graceful, and symmetrically shaped Oval cuts. Ovals also may show color and inclusions more than other shapes.

Size Matters

Oval cuts generally look larger from the “face up” position than other shapes of the same carat weight.

Basic Oval Cut Guidelines courtesy of http://www.gemappraisers.com/index.asp

CUT CLASSES	Class 1A	Class 1B	Class 2A	Class 2B	Class 3A	Class 3B	Class 4A	Class 4B
	Ideal cut	Premium cut	International fine trade cut		US domestic average cut		below average
Table %	55-60%	53-61.5%	52-62%	51-64%	51-67%	49-70%	48-72%	>72% <48%
Crown Height %	12-15%	11.5-16%	11-16.6%	10.1-17.5%	9-18%	8.3-18.9%	7.8-19.5%	<7.8% >19.5%
Girdle thickness Word descriptions and percentages.	V. Thin to Sl. Thick (0.4%-4.5%) or Thin to Thick (1%-5.5%)			V.Thin to Thick(0.4%-5.5%)	Very Thin to Very Thick (0.4% to 7.0%)		Extremely thin to Extremely thick (0.0% to >7.0%)
Total Depth %	59.0-63.0%			63.1-65.4%	56-68.5%	46-71%	43-73%	>73% < 43%
Length:Width Ratios Trade preferences. A matter of personal taste and choice.	Pear 1.50-1.75 Marquise 1.75-2.25 Heart 0.98-1.02 Oval 1.33-1.66				1.26-1.99 1.51-2.49 1.24-0.91 1.26-1.74		> Class 3 < Class 3
Polish/Symmetry Not a primary determining factor.	Excellent to Good				Good or Fair		Poor to Fair