BLACK OPAL (COMMON) SPHERES

Black opal from Madagascar is a striking variety of common opal known for its deep, inky body color and dramatic swirling patterns. Formed when silica-rich fluids solidified within volcanic and sedimentary cavities, this material owes its dark tones and flowing bands to finely dispersed mineral impurities. The opal takes an exceptional polish, revealing a glossy finish that highlights its mysterious, storm-cloud aesthetic.