Description
Type of stone: Boulder Opal
Origin: Winton Queensland
Approx Size: 170mm x 130mm x 20mm-90mm
Approx Weight: 2200 grams
This is a large 2.2kg piece of rough boulder opal from Winton in Queensland.
This boulder opal has spectacular colours with blues purples and greens.
The boulder has many veins running through it so may be able to be split to reveal more opal or left as a display piece.
First 4 photos are shown wet to show the true beauty. The rest are shown when dry.
Boulder opal is formed when silica-rich water seeps into the cracks and cavities of weathered ironstone concretion. The water evaporates, leaving behind solid silica that hardens into precious, colourful opal and potch. The alignment of the silica spheres must be exact to create the play of colours or it will be potch.
Please Note
As all of our stones are natural there may be cracks, holes and other imperfections. All of our stones are natural and we don’t do any crack or void filling. We don’t use oils or waxes to enhance our stones. We polish our stones by using finer and finer diamond polishing pads followed by different types of polishing oxide.
We do our best to show the true nature of our stones. Different computers and phones display colours differently but if you receive a stone you are not happy with we offer free returns so you won’t be out of pocket.