Fireworks. Jellyfish. Galaxies. Lightning. Opal’s shifting play of kaleidoscopic colors is unlike any other gem.
When opal is formed, silica gel fills crevices in rock. As water evaporates, the silica is deposited in the form of tiny spheres.
Opal’s flashing play-of-color is caused by those silica spheres being stacked like tiny Ping-Pong balls in a box..which leads to diffraction of light
With a fantastic variety of patterns and colors…No two opals are exactly alike.