Round Brilliant Cut Colorless Gemstone alongside a 2022 US Penny

This item is a loose, round brilliant cut gemstone displayed alongside a United States one-cent coin (dated 2022) for scale. Based on the visual size comparison with the penny (19.05 mm diameter), the gemstone appears to measure approximately 6.5mm to 7mm in diameter, which roughly corresponds to a 1.0 to 1.25 carat weight if it were a diamond. The stone exhibits a high refractive index with significant fire and dispersion, showing flashes of spectral colors including red, blue, and yellow. The cut features a standard round brilliant facet pattern including a table, crown facets, and a visible pavilion structure through the table. The stone appears colorless or near-colorless with good transparency; however, visible surface dust or minor lint is present on the table. Without specialized testing, it is impossible to distinguish if this is a natural diamond, a lab-grown diamond, or a stimulant such as cubic zirconia or moissanite. The accompanying coin shows typical circulation wear and provides a modern context for the age of the capture. The gemstone appears to be in excellent condition with no visible chips or fractures on the girdle or culet.