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|Carat is the standard unit of measure used to indicate the weight of a specific diamond and precious stone. Carat weight has been gauged against the metric system since 1913. Once carat equal 0.2 grams or 0.007 ounces. Carat weight is usually measured to three decimal points and rounded to the nearest hundredth. Diamonds are mined from deep within the many layers of our earth’s crust, most rough diamond are either too small or too inferior in quality to produce the beautiful diamonds, the products within the fine jewelry sector demand. With this in mind the production of a carat diamond can require the mining of up to one million rough diamonds. The rarity of larger high quality diamond has resulted in significant price escalations between sizes. For example a one carat diamond can command four to six times more than a half-carat diamond.
How to select a carat weightCarat weight specifically refers to the diamond weight. But as much as a person weight does not necessarily correlate with height, carat size, by itself, may not accurately reflect a diamond's size. We recommend considering carat weight with two characteristics. The first one is the distance across the top of the diamond measured in millimeters, the second on is the diamond cut grade.
A carat measurement indicates the weight of a diamond, its length and width measurements indicate the actual physical size, or how big the diamond will look when looking at it from above. Diamond of the same carat weight can vary in size. An example a one-carat diamond could measure 5.9 mm in diameter, while another one-carat round diamond could be 6.5 mm wide. Broader diamonds with larger millimeters measurements create bigger look or greater visual impact. Also the shape of a diamond may impact how the stone appears when viewed from above. Diamond shaped cut at lower depths will have larger lengths and widths. Diamond shapes like oval or marquise will have elongated lengths, resulting in the look of a larger size per carat.
The bigger the weight the higher prices per carat. If carat weight is the most important thing in your search you should consider a diamond clarity grade of Slightly Included (SI1-SI2) and a color grade around Near Colorless (G-J). When choosing the carat weight you also have to think about what ring size the wearer will be using. A one-carat diamond will look larger on a size 5 finger than is would on a larger hand. Still have questions? One of our diamond specialists will be happy to help please live chat or give us a call at (800) 970-0388.