GA240 Diamond Weight Calculator With Gauge & Estimator Tables

Description The only gauge with tables for estimating weights of all shapes of stones round, rectangle, marquis, etc Features Used to estimate carat weights for four basic diamond shapes (round, marquise, emerald, and pear) without removing stones from mounting. Includes high quality stainless steel gauge. Measure depth and width with caliper and then compare with tables in the 70-page reference booklet provided. Beautifully printed in the USA.