Opal is a mineral is a form of hydrated amorphous silica, without a reticular structure, in fact it does not appear in crystals, but in veins, nodules and crusts of various colors, often with iridescence. The color varies from transparent to milky white, with an infinite number of different intermediates: pink, green, red, yellow, brown, black. Discover all the colors of the opal!
€ 11,50
16-inch Strand
STK52884
€ 11,50
