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."
Three carat diamonds weigh three carats: that's how 'big' they are.
Carat is a weight, so its weight is one tenth of a carat or one tenth of .20 grams.
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 equivalent weights are 6,378.7 grams -- 225 ounces, that's how big this carat weight is.
You've given the carat weight of a diamond. 'Big', then, is based on the cut of the stone.
14500
A 1.00 point diamond is one carat, so a .12 point diamond is a little over 1/10th of a carat.
It is essential to know if pearl is natural, If your pearl is 100% natural than the expected price per carat should be somewhere around $100 per carat.
The total weight of all the diamonds combined in the carat total weight equals one half carat -- .50. The mm measurement of each individual diamond does not depend on the total carat weight of the collection.
Carat is an indicator of weight; karat is an indicator of purity. Diamonds are measured in carats; gold is measured in karats. So, how big is a karat of gold? It can be as small as a molecule. There is no limit to how large a karat (purity) of gold can be.
A one carat diamond in the round brilliant shape measures aproximately 6.5mm at the girdle. If the diamond is another cut, measurements will be different.
A 10 carat diamond weighs 10 carats. Apparently, you want to know how a 10 carat diamond might look on the 'big-ness' scale. If the stone is a brilliant cut, it will be around 10MM at the girdle. Explore the link below to see the visual sizes of other cuts and carat weights.