Depending on the cut, every diamond weighing two carats will have different dimensions.
For example, a round brilliant cut diamond could measure about 8.2MM at the girdle. Its other dimensions depend on the quality of the cut.
The dimensions -- measurements -- of a diamond include its carat weight, its cut, its clarity and its colour.
Diamond gemstones are graded according to each diamond's cut, colour, clarity and carat weight.
A two-carat diamond is a gemstone that weighs two carats.
A 2 pt diamond is a diamond weighing .02 carats or 2/100ths of a carat.
The weight of a carat is equivalent to 200 milligrams, so a two-carat diamond weighs 400 milligrams.
The dimensions -- measurements -- of a diamond include its carat weight, its cut, its clarity and its colour.
Diamond gemstones are graded according to each diamond's cut, colour, clarity and carat weight.
The diamond weighs one carat. Its other dimensions depend on its cut: round, princess, emerald and so forth. A carat is 0.2 grams; a pure diamond has a density of 3.5 gm cm-3 which translates to a volume of 0.057 cm3 per carat. As stated in the first answer the linear dimensions depend on the shape that is cut.
A two-carat diamond is a gemstone that weighs two carats.
A 2 pt diamond is a diamond weighing .02 carats or 2/100ths of a carat.
Carat is the weight measurement for a diamond; a certified gemologist can give you an exact weight. Your local jeweler may be able to estimate the weight of the diamond by measuring its mm dimensions -- especially if you do not want the gem removed from its setting.
A two carat round brilliant cut stone will measure about 8.2 mm. A different cut will have a different measurement.
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You can review the chart, below, to determine the specific gravity of diamond versus other gemstones, including several different types of rubies. From the chart you can deduce that depending on the type of ruby, it may or may not be exactly comparable to diamond.
250 carat Diamond- uncertain amount as can be auctioned; very few diamonds of this size25 carat Diamond- $1 million to $2 million; for a lower quality stone2.5 carat Diamond - $5,000~$8,000Another AnswerYou can buy a 2.5 carat diamond today on Blue Nile and spend from US$12,000 to US$16,000.Also, a 15 carat diamond is available on Blue Nile today for just over US1,000,000.
1 Carat = .2 grams = 100 points
About two carats.