precious opal
C5639
concept
Precious opal is a hydrated amorphous form of silica that exhibits a distinctive play-of-color caused by the diffraction of light through its internal array of microscopic silica spheres.
C5639
concept
Precious opal is a hydrated amorphous form of silica that exhibits a distinctive play-of-color caused by the diffraction of light through its internal array of microscopic silica spheres.