The perfect carat weight of a heart diamond ring is best if they are more than 0.50 carat since it would be hard to perceive the outline of the shape in one glance. Heart diamond rings featuring small stones are ideally placed inside a three-prong setting or a bezel. However, if you choose to buy it for an engagement or as a love symbol for an anniversary, be mindful of the fact that much larger stones necessitate four-prong settings. Although they surfaced into the market in early the 20th Century, heart-shaped diamonds traces back to the 16th Century. Besides symbolizing love, they can be given to someone else to honor long-standing friendship and as a mutual sign of goodwill. Its silhouette will be a significant factor, which couples may need to consider. It can be in the form of a traditional heart shape featuring roundish lobes and deep cleft or slender shaped featuring straighter lobes and shallower cleft.