These one of a kind stud earrings are made with stunning wood replacement Australian opals. Wood replacement opals are a truly exquisite opalised fossil. Opal formation commences when silica dissolves in water. For these opals, the silica has filled in the void left by decaying tree roots or branches. This remarkable process results in the meticulous preservation of intricate internal structures, meaning the wood structure remains visible within the opal. The remaining internal structures create a mesmerizing inner world that is visible through the transparent and translucent opal.