White Opal - 2.92 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Play of Color

White opal is a captivating variety of opal known for its milky white base color interspersed with flashes of vibrant play-of-color. This optical phenomenon occurs due to the diffraction of light by the microstructure of hydrated silica spheres within the stone. White opals can display a range of colors—often vivid reds, greens, blues, and purples—that shift as the angle of viewing changes. The gem is formed over millions of years as silica-rich water seeps into cracks and voids in rocks, gradually solidifying into opal. White opals are prized for their delicate translucence and striking internal color play, making them desirable for jewelry and collectors alike. The Antwerp Laboratory for Gemstone Testing (ALGT) certification ensures quality and authenticity, providing confidence about the stone's characteristics and origin.