Mounted Gemstone Weight Calculating Device

Mounted gemstones are not measured accurately because the depth of the stones is obscured by the metal mount of the jewelry. This leads to major disputes about the size and worth of gemstones. The team developed a mounted gemstone weight calculation device, based on the technology found in the Angular Spectrum Evaluation Tool created by the American Gem Society, to measure mounted gemstones quickly and accurately. Angular spectrum evaluation technology uses multicolored light to illuminate the stone, which produces a unique pattern specific to its internal angles. This pattern is compared to a software-generated matrix of stones using image-processing software in Matlab. Image analysis makes it possible to find the internal angles of the gemstone using only a photo of the color-illuminated top surface. The gemstone’s weight is then calculated from its density and surface measurements. Efficient structural design and advanced software make the mounted gemstone weight calculation device significantly faster, easier to use, and more accurate than the current method for mounted gemstone measurement.