Diamond Estimator Gauge Stainless Steel - TG20
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This handy Stainless Steel gauge allows you to estimate the carat of various shapes of diamonds from its diameter and shape.
It works for Round Brilliant 0.01-3.0ct (19 types) stones as well as Pear Shaped, Oval, Emerald and Square 0.25-1.0ct (4 types).
Card sized gauge fits in every wallet, card holder and easy to carry out.
Very useful for carat estimation, business and buying diamonds.