JayRay Projects calculators are trade tools for Jewelers, Pawnshops, or
anyone who has the need to measure mounted & unmounted stones or scrap
precious metal. Diamond Carat Weight Calculator will accurately estimate the
Carat weight of mounted and unmounted Diamonds. Gemstone Carat Weight
Calculator will accurately estimate the Carat weight of loose or mounted
Diamonds, Rubies & Emeralds. (in Business and Productivity)