Alexandrite GemStone | R.T.T

£ 5   £2

Shape :
Texture : Original Gemstone
Size : £/Carat Weight
Style :
Color :
Density :

What is a carat?
  • Why is carat weight important?
    • How does carat weight affect diamond size?
      • What is minimum individual carat weight?
        Minimum individual carat weight is the minimum carat weight of one diamond in a piece of jewelry. If a pair of diamond stud earrings has a total diamond weight of 1/2 carat, the individual carat weight of each diamond would be 1/4 carat. The actual diamonds you purchase may weigh slightly more or less than the fractional weight specified. The Federal Trade Commission has strict guidelines about the disclosure of the range of carat weight that a fraction can represent. The chart below outlines acceptable ranges for carat weights expressed as fractions. Some diamonds may be cut into sizes between these more common fractions. Because it is more unusual for diamonds to be cut into these in-between sizes, ranges are not defined for these sizes. These sizes would have their specific carat weight (e.g., 0.62 carats) listed under minimum individual carat weight.

      • 1/4 carat total weight may be 0.21 to 0.29 carats
      • 1/3 carat total weight may be 0.30 to 0.36 carats
      • 1/2 carat total weight may be 0.45 to 0.59 carats
      • 3/4 carat total weight may be 0.70 to 0.84 carats
      • 1 carat total weight may be 0.95 to 1.10 carats
      • 1 1/4 carats total weight may be 1.20 to 1.29 carats
      • 1 1/2 carats total weight may be 1.45 to 1.55 carats
      • 2 carats total weight may be 1.95 to 2.05 carats