If a diamond is a round cut, the mm size at the girdle is about seven if the diamond weighs about 1.25 carats.
Other gemstones have different weights relative to their mm measurements.
The carat size of a diamond should be determined by a certified jeweler. There are two different sizes the is the millimeter size which as stated was 7mm and then a jeweler can give a carat size.
Since cushion cut is a rather square cut, one must assume that your diamond measures 7mm x 7mm. In this case, it weighs approximately two carats.
if it means inches. i still don't know what a 7mm means. i just want to know what carat it is? <><><><> MM is the abbreviation for millimeter- a measure of size. 25.4 mm = 1 inch. 7mm is just larger than a quarter inch. It has no connection to purity of gold, which is measured in karats (k not c) Carat with a C refers to the weight of a gemstone.
A carat diamonds size is 3.5mm.
There is no direct relationship per se between MM measurements and carat weight of gemstones.In order to ascertain the carat weight of the baguettes, take them to a jeweler that you trust and ask that they be removed from their setting and weighed.
No, a one carat tanzanite gemstone and a one carat diamond are not the same size. Tanzanite is less dense than diamond, so a one carat tanzanite will typically appear larger in size compared to a one carat diamond.
Carat is not a measurement of size, its weight. 200 miligrams=1 carat
The 7mm designation is a reference to the bore size, or diameter. In decimal size it means this rifle has a barrel groove diameter of .284 inch.
A common example of 7mm in size is a standard pencil lead, which typically measures around 0.7mm in diameter. Another example is the thickness of a credit card, which is approximately 0.76mm, making it slightly thicker than 7mm. Additionally, 7mm can refer to a small bolt or screw size used in various hardware applications.
If 7.7 is the carat weight, then the size is 7.7 carats. The millimeter measurements of a diamond with this weight will vary, depending on the cut.
each carat is 200 miligrams
carat