Tools built for
better decisions.
Fast reference tools for researching diamonds, jewelry and precious metals. Educational calculations are not appraisals, purchase offers or investment advice.
Gold Value CalculatorEstimate intrinsic metal value using weight, karat and a spot price you provide.→Gold Karat ConverterConvert karat purity to theoretical percentage and fineness.→Precious Metal Weight ConverterConvert grams, troy ounces and pennyweight (DWT).→Diamond Price Per CaratCalculate price per carat for easier like-for-like diamond comparisons.→