The item is a loose White opal gemstone characterized by its spherical shape and a cabochon cut. The opal exhibits a play-of-color effect, displaying a range of hues including green, orange, and blue, indicative of its opalescent quality. The transparency of the gemstone is classified as translucent, allowing light to pass through while maintaining some opacity. The polish is assessed as very good, contributing to the overall luster of the surface. The symmetry of the gemstone is also rated as very good, ensuring a balanced appearance. The composition is primarily silica with water content, typical of opal. No inclusions or blemishes are noted, indicating a high clarity level.