1 carat = 6.5 mm
A half carat diamond of this cut measures 5.2 mm at the girdle; a .65 carat diamond measures 5.6 mm at the girdle. A certified gemologist can give you the exact carat weight of your diamond.
At the girdle, this stone would measure about 6.5 mm.
1 carat = 100 cents = 6.5 mm = solitaire
A four-carat round cut diamond measures about 10mm at the girdle. Different cuts would have various mm measurements for each weight.
2 cm just like jamies thingy
A 1.75 carat diamond billiant cut is about 7.8 mm and a 2.00 carat stone is about 8.2 mm at the girdle. In order to know the exact carat weight of a stone, one must take it to a certified gemologist and ask that it be removed from its setting and weighed.
Depends on the cut. Carat is a measure of weight, not length, width, depth, area, or volume. What you are asking is kind of like asking how many inches is a pound of lead.Another AnswerIf the quarter carat diamond is a round cut, its mm measurement at the girdle is 4.1. If the cut is a different cut, see the answer, above.
If the diamond is a round cut, the measurement would be 7.4 mm at the girdle. If the diamond is of another cut, the measurement would be different.
A round cut diamond, cut to industry standards, that is 5.1 mm across the face of the diamond (the top) weighs half a carat.
A carat is a unit of mass, or purity, not of length. The two units are therefore incompatible.
A single one carat emerald cut diamond measures 6.73 x 4.82 x 3.33 mm. A single .33 carat emerald cut diamond measures 4.93 x 3.55 x 2.19 mm. It is unclear from your question where you want to take your 2 mm measurement, and the cut you want to measure.