5.55克拉砾岩欧泊宝石。天然澳大利亚欧泊，正面完整。 磨光- 1.2 g - (1)

5.55cts 昆士兰砾岩欧泊 石

Dimensions (mm) 22 x 9 x 3mm
Weight (cts) 5.55
Type Polished
Shape Freeform

Opal Type: Australian Boulder Opal

Origin: Winton Region

Treated/Untreated: Untreated

Colour: Multi - Colour

Pattern: Mixed Flashes

Accuracy of picture: Accurate

Base of opal: Solid Native Ironstone

Cabochon: Low

Comments: A free form shape Australian Boulder Opal stone with mixed flashes of multi-colour on a ironstone base.

Queensland Boulder Opal Gem Cabochon – Freeform

Discover the natural beauty of this **Queensland Boulder Opal Gem Cabochon**, expertly polished to a high, lustrous shine to showcase its unique character and natural opal colours. Its freeform shape celebrates the individuality of the stone, making it a beautiful addition to any gemstone collection or an ideal choice for jewellery making.

Queensland, Australia, is world-renowned for its beautiful Boulder Opals, particularly from the outback regions of Quilpie, Winton, and Koroit. These remarkable gemstones formed approximately 100 million years ago during the Cretaceous Period, when silica-rich solutions gradually filled cracks, cavities and spaces within ancient ironstone boulders. Over millions of years, the silica hardened into precious opal, creating distinctive flashes of colour against the natural ironstone host rock.

Each Queensland Boulder Opal is unique, reflecting the remarkable geological history of the Australian outback. With its natural character, freeform shape and high-gloss polish, this cabochon is a wonderful example of Australia's treasured opal heritage.