No reserve price White Opal - 12.50 ct - GEM-TECH Istituto Gemmologico

White opals are renowned for their delicate translucent to opaque white body alongside a radiant play-of-color that sparkles across their surface. This 12.50-carat white opal, certified by GEM-TECH Istituto Gemmologico, exhibits these qualities typical of precious white opals where the light body color enhances flashes of spectral colors. Opal is a hydrated form of silica, formed through the deposition of silica spheres in rock crevices and sediment over long geological periods. White opals are treasured for their subtle elegance and the captivating shifting rainbows of color that appear with changes in lighting and angle. Their relative softness requires careful handling in jewelry settings, often protected by bezel or other secure mountings. Larger specimens like this are particularly valued by collectors for their display of broad, vivid color patterns making them striking centerpieces for fine jewelry.