Using the query 'diameter' assumes that the diamond is a round brilliant cut. A 2.50 carat round brilliant cut measures about 9MM at the girdle -- your diamond's diameter will be slightly shorter.
A one-third carat diamond weighs one-third of a carat. If the stone is a round brilliant cut stone, it's diameter measurement at the girdle will be about 4.4mm.
0.25 means its the carat of diamond,meaning you have quarter of carat real diamond
Every diamond is valued by its cut, colour, clarity and carat weight. A diamond this large is rare: you may be able to find a comparable carat weight diamond in an auction catalog from Sothebys or Christies.
A carat, in relation to diamonds, is a unite of mass that is equal to 0.2 grams. Meaning a 4 carat diamond weighs just over .8 grams and an 8 carat diamond is 1.6 grams.
A one carat diamond equals 100 cents when measuring diamonds in both carats and cents.
A two-carat round cut measures in diameter about 8.2mm at the girdle.
A common misconception. Carat is nothing to do with size. Carat is related to weight and therefore a 1 carat stone depends on the gemstone in question and its cut. 1 carat is 0.2g and a 1 carat round-cut diamond is approximately 6.5mm in diameter. Similarly, since CZ is a diamond simulant, a 1 carat round-cut CZ is also deemed to be one that is 6.5mm in diameter but such a stone actually weighs more than 0.2g because CZ is more dense than diamond.
A 1.00 carat round brilliant, when properly cut, should measure approximately 6.5 mm in diameter.
In terms of a round brilliant diamond, a properly cut stone should measure approximately 5.2 mm in diameter.
A one-third carat diamond weighs one-third of a carat. If the stone is a round brilliant cut stone, it's diameter measurement at the girdle will be about 4.4mm.
The diamond is 4.8 [something], and you can add [carats] or [millimeters], depending on what characteristic you want to describe for the diamond, it's carat weight or its round brilliant cut diameter, respectively.
The carat defines the standard unit of weight measurement of a diamond.
The two measurements you give are not related, essentially. The MM measurement could be the diameter of a brilliant cut diamond, or one measurement of another shape. The carat weight you give is a weight measurement of gemstones.
Carat is the measurement of a diamond's weight. The stone's value would partially depend on its carat weight.
A one carat diamond weighs one carat and contains one carat.
A two-carat diamond is a gemstone that weighs two carats.
A 625 carat diamond would be a very large diamond, weighing 625 carats.