5.65 carats Natural Australian Opal | Oval – 12 × 16 × 5mmA vibrant Australian opal displaying strong multicolor play of color across a bright body tone. Red, green, and blue flashes appear vividly under changing light, creating dynamic surface movement. Shaped in a smooth oval cabochon with a rounded dome, the polish enhances depth and allows color patches to shift fluidly across the surface. The color distribution appears full and evenly spread. With its generous 12 16 mm face up size, this gemstone is