How gemstone weight? which unit of weight is used?

Weight and price

UNIT OF WEIGHT

Ø    Gemstones are sold by weight.

Ø    Large ornamental and rough material may be sold in kilogram (Kg) or gram (gm).

Ø    Gemstone weight is given in Carats.

Ø    Carat is denoted by “Ct”       

                               1 Ct = 0.2 gm

                               5 Ct = 1.0 gm

Ø    Each carat is split into 100 cents or  points 

1.00 Ct = 100 cents or points

0.50 Ct = 50 cents or points

0.01 Ct = 1 cents or points