Queensland Boulder Opal - Blues and Greens Tone Ring Small Gumnut 6mm Freshwater Pearl

Small Gumnut 6mm Freshwater Pearl & Length including Bail - 30mm

the silica

Chain length : 44cm

2mm wire for the tail

Red Stripe Two Tone Dark Opal from Lightning Ridge

Queensland Boulder Opal - Blues and Greens Tone Ring Small Gumnut 6mm Freshwater PearlFrom Tall Trees Studio Solid piece of multi colour toned Queensland Boulder Opal on Ironstone. Boulder opal forms within ironstone boulders. The silica, a key component of opal, is released into the groundwater through the weathering of surrounding rocks, particularly sandstones and mudstones. As groundwater moves through the rock, it carries the dissolved silica. The silica rich water then seeps into cracks and voids within the ironstone boulders.