Carat: Size Matters

Carat refers to the weight of the diamond, not to be confused with the "karat," which indicates the purity of gold. For most couples, the average center stone is 1.05 carats,* while the average engagement ring has a total carat weight (counting side stones or other accents) of 1.50 carats. However, it's important to remember that there's no right or wrong size when it comes to carats. If you're looking to save, buy shy, meaning buy a 1.49-carat diamond instead of 1.50. The difference won't be much to the naked eye, but the price jumps significantly every time you reach one of the half-carat marks. You'll save big without having the ring really look any smaller.

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All figures and statistics courtesy of The Knot Market Intelligence Bridal Series: 2009 Jewelry Study.

Photo: Red Ribbon Studio