This gorgeous gemstone is dendritic opal. The dendritic opal can be found all around the world. Although most opal mines are found in australia where the opal is the national gemstone at places like lightning ridge, the famous white cliffs, and the town of coober pedy. The common opal category reaches all the way to the united states and mexico.this opal is relatively rare. Depending on how the stone is cut it can be clear, or dendritic which has black fern like inclusions. This adjustable ring has white snowy depictions with the black fern like inclusions as mentioned.stone natural dendritic opal material 925 solid silver approx stone size 30mm x 15mm beautiful gemstones designed by naturethe henryka designer gemstones collection is a celebration of completely natural and beautifully rare gemstones from across the world.each gemstone is carefully hand chosen by us for its natural and un treated colours and patterns. We look for vibrant gemstones we know you will love, as well as rare gemstones you may have never even heard of from all corners of the earth.instead of seeking perfection, we choose gemstones based on the natural quirks and inclusions that make them entirely unique. This means incredible stripes, bold spots, wave like ripples and swirls that give each gemstone its own unique fingerprint.these characterful gemstones are then cut, polished and set by hand into silver jewellery designs, from statement necklaces to rings, earrings and bracelets. When wearing a piece of henryka designer gemstone jewellery, you can be assured that no one will ever be wearing the same piece. It is individual to you.