Diamond Gemstone Size Gauge Carat Measuring 4 Folding Fan Display ArmsProfessional jewellers diamond measuring gauge. This folding gauge measures round cut diamond gemstones from 1.5mm 0.01ct - 11mm 6ct. And has a number of uses. It can be used to estimate the carat weight of mounted diamond gemstones that can not be weighed on scales. Also it can be used to display the size of a diamond gemstone to a customer.
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