Australian Boulder Opal Gold Necklace

Exquisite 9kt yellow gold and an Australian Boulder Opal Hook Earrings.  This gorgeous Boulder Opal is set into a landscape oval shape and has a beautiful 9kt yellow gold chain attached to the pendant. You will love wearing this stunning piece of Australian geology.

Unique geological formations in Australia have favored the formation of this sedimentary stone - about 140 million years ago. At that time, an inland sea, abundant with silica-rich sands, covered much of central Australia. This sea eventually receded and formed what is now known as the Great Artesian Basin. Around 30 to 40 million years ago, heavy weathering began to dissolve the silica. The holes that were formed in the rock began to collect silica-rich water. Over time, the silicates trapped in these spaces formed opals.

Materials - 9kt yellow gold Chain 42-45cm in length with a stunning Australian Boulder Opal 9x7mm