The numbers are probably an indication of the purity of the gold. Pure gold is 24 carat but 22 carat, 18 carat, 14 carat and 9 carat are all common.
1 carat = 200 milligrams 1/2 carat = 100 milligrams
A carat (^) is a symbol used in mathematics and computing to represent exponentiation. It is not a punctuation mark.
If you mean 1/4 carat, that is one quarter of a carat or 25 points (one carat = 100 points) .
The word "carat" (karat) has the homonyms (homophones) caret and carrot. CARET - the keyboard symbol (^) CARROT - a vegetable plant with an edible orange root
A carat is a unit of weight used for gemstones. One third carat is the weight of the diamond.
Both versions of the description you give, 20 point and 0.2 carat mean that the stone is roughly one-fifth of a carat in weight.
The notation '1.64 carat' means that the diamond weighs 1.64 carats.
The descriptor '.45' usually documents the carat weight of a diamond: meaning 45/100ths of a carat, or nearly half a carat.
very good
carat
0.25 means its the carat of diamond,meaning you have quarter of carat real diamond