Blue opal is a natural variety of common opal, characterized by delicate shades ranging from sky blue to turquoise, sometimes with milky or translucent reflections. Its opalescent luster stems from an amorphous internal structure of hydrated silica that traps tiny amounts of water.
The main mines are located in Peru, where the stone takes on warm, milky hues, and in Australia, Ethiopia, and Madagascar, where cooler, more transparent shades prevail. Considered a gemstone of serenity and imagination, it promotes inner calm and authentic communication.
