The standard number of facets of a Heart Shape cut gemstone is 59. The Heart Shape is a pear-shaped gemstone or Diamond with a cleft at the top.
Generally, a Heart Shape's length to width ratio is slightly over 1:1, approximately 1.1:1 in favor of length, but usually not over 1.2:1. The heart is the ultimate symbol of love. Most Heart Shape cut gems are nearly round. This has the advantage of having a nearly round pavilion that provides beautiful brilliance.
Most Heart Shape cuts are purchased as single gems. Solitaire rings are set with hearts throughout the range of sizes. After necklaces and rings, most Heart Shape cuts are sold as matched pairs for stud earrings. The primary market for Hearts is for luxury jewelry. There is heavy interest in the Heart Shape cut in the Far East.
Hearts must be extremely well cut which makes them more expensive because excellent proportions result from a greater expenditure of rough. Understandably, noticeable increases in sales of Heart Shape cut gems occur around Valentine's Day.
As with all fancy cuts, buyers of Hearts should look first at the overall make. The first question to ask is “do I find the gem pleasing to the eye?”
Generally, look for a balanced shape, avoiding extremes. Lobes should be rounded, and the cleft should be relatively sharp and distinct.