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There is no direct relationship between millimeters and carat weight for diamonds. This is because gem-quality diamonds can be cut into many different shapes.

The top, measurable shape may belie the depth of the stone, and thus misrepresent its carat weight.

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11y ago

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Related Questions

How much is a 1 carat diamond with 80 points?

The diamond either weighs 100 points, or a full carat, or it weighs 80 points or 80/100ths of a carat.


How much is a your 1 carat diamond with 80 points?

First, understand that if your 'one carat' diamond has '80 points', it may not weigh one carat. Then, take your diamond to a certified gemologist who can tell you 'how much' can be attributed to your diamond.


What is the size of a 4.50 carat diamond in millimeters?

If the stone is a round diamond, the stone measures about 10.6mm at the girdle. Remember carat is an indicator of weight, and millimeters is an indicator of length: the two are only loosely related in this case.


How big is a carat?

A carat is a measurement of diamond weight. From Amazon.com: "Carat is the unit of measurement used to describe the weight of diamonds. One carat is equal to 0.2 grams, or 0.007 ounces (avoirdupois). Five carats equals 1 gram, and 141.7 carats equals 1 ounce."


Is 1 carat round diamond the same as 7 millimeters?

No. Different cuts of diamond stones have different measuremenets, which are never directly related to the carat weight of the gem.


How many in a karat?

As far as gemstones are concerned, carat (karat) is used to measure their weight (as opposed to metals where carat refers to purity). There are 100 points (pts.) to a carat so a 1.0ct diamond is equal to 100 points; a half carat diamond is equal to 50 points and so on.


How many points or cents does it take to equal 1 carat in diamond weight?

One hundred points are equal to one carat.


In the diamond trade a diamond weighing from 45 to 49 points might be called?

You could say that it was almost half a carat, since a full carat is sometimes called 100 points.


How much does 1 carat of diamond weigh in grammes?

1 Carat = .2 grams = 100 points


How many cents in carat?

'Cents' or points usually describe diamond weight that less than one carat. One carat equals 100 cents or 100 points.


What does 28 points in a diamond make?

If the 28 points to which you refer are based on a scale of 100 points equal to one carat, then these 28 points could indicate that the diamond in question weighs just over one quarter of a carat or 28/100ths.


How may PTS equal a karat in a diamond?

If by PTS you mean points, then your question becomes "How many points equal one carat in a diamond?" One hundred points equal one carat when speaking of diamonds. Karats measure purity of metal, not diamond weight.