Opal

Opal is a mineraloid, which means it doesn’t have a crystalline structure like most minerals. Instead, it forms from the deposition of silica in the cracks and voids of rocks, typically in volcanic regions. Known for producing high-quality opals, including the famous Lightning Ridge and Coober Pedy opals. Produces a range of opals, including some with vibrant colors and play-of-color. Known for fire opals, which are bright and fiery in color. ne of the most distinguishing features of opal is its play-of-color, which is the shifting display of different colors seen as the opal is moved. This is due to the way light interacts with the internal structure of the opal. Due to its relatively low hardness, opal should be protected from harsh chemicals and extreme temperatures. It’s best to store it separately from other gemstones and clean it with a soft, damp cloth. Opal generally falls between 5.5 and 6.0 on the Mohs scale of hardness.