# Gemstones Carat Weight Estimation Calculator

Find the carat weight of gemstones using this online calculator. Select the Gemstone, its Facet Style Factor (ff) and enter the gridle length, gridle width, depth and average specific gravity in this gemstones carat weight estimation calculator to get the carat value. Carat weight for gemstones is standardized in the 20th century. It is denoted as "ct" and equal to 200 milligrams. Most of the gemstones are measured to the nearest hundredth of a carat.

### Example:

Calculate gemstones carat weight for Agate with Facet Style Factor as Emerald cut, having a gridle length of 5, gridle width of 4, depth of 6 and average specific gravity of 2.65.

#### Solution:

Gemstones Carat Weight Estimation = 5 x 4 x 6 x 2.65

= 0.509