An instrument designed to estimate the mass of a gemstone, typically in carats, based on its dimensions. For instance, a cubic zirconia cut to the exact dimensions of a one-carat diamond will generally register as approximately the same carat weight when calculated, although the actual mass will differ due to density variations.
Precisely estimating a gemstone’s mass is crucial in valuation, trading, and jewelry design. Historically, estimations relied heavily on experience and visual assessment. Utilizing dimension-based calculations provides a more objective and repeatable assessment, reducing discrepancies and aiding in fair pricing practices. This method is particularly beneficial when direct weighing is not feasible or when dealing with mounted stones.