A raw opal stone displays vibrant, multicolored hues, reflecting blues, purples, oranges, and greens. The gem, partially embedded in a rough matrix, catches ambient light, highlighting its translucent properties. This play of color, known as opalescence, is characteristic of opal, caused by the diffraction of light through tiny silica spheres within the stone. The surface appears smooth with a glass-like texture, contrasting against the rugged exterior. It rests on a sandy ground, suggesting a natural, unpolished state.
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