The Guide to Diamonds
Diamond Carat
What Is Diamond Carat?
Carat denotes the weight of a diamond, not the size. A diamond may have a higher carat weight without appearing larger; and two diamonds of the same carat weight can vary in size if one is cut deeper than the other.
Is a Higher Carat Weight Better?
Taken by itself, carat weight does not determine a diamond’s value. For example, two one-carat stones can vary widely in price when clarity, color and cut are taken into consideration. Large diamonds of peerless quality are rare.
The Tiffany Difference
Tiffany’s Carat Standards
Diamond Education
Diamond Carat Chart: Weight Rather Than Size
Carat weight can appear differently across different diamond shapes such as round brilliant, princess, pear, oval, cushion, marquise, emerald, radiant or heart.
Sizes are shown for proportionality purposes. Images do not reflect actual carat size.
Sizes are shown for proportionality purposes. Images do not reflect actual carat size.
Speak with a Tiffany Diamond Expert
Tiffany Diamond Experts are delighted to assist you as you begin your engagement ring journey, from sharing information on the 4Cs to trying on engagement rings or customizing a design.
Frequently Asked Questions
Carat denotes the weight of a diamond, not the size. Tiffany measures diamonds to 1/1000th of a carat; one carat equals .20 grams. Tiffany diamonds are always cut to maximize beauty, not carat weight.
"Tw" is an abbreviation for total weight in regards to diamond carats. Online, "tw" might be used to describe the total carat weight of all diamonds included in a piece of jewelry.
Carat weight can appear differently across different diamond shapes such as round brilliant, princess, pear, oval, cushion, marquise, emerald, radiant or heart. A diamond may have a higher carat weight without appearing larger and two diamonds of the same carat weight can vary in size if one is cut deeper than the other. In other words, it is important to note that carat weight does not necessarily denote size.
Diamonds are measured in carats, which indicates the weight of a diamond, not the size. Tiffany measures diamonds to 1/1000th of a carat; one carat equals .20 grams.
