Australian variscite from the Gascoyne region
Variscite is a hydrated aluminium phosphate, valued for its green colour and contrasting matrix. The Gascoyne region of Western Australia includes the documented Mount Deverell and Mount Deverell East deposits near Milgun Station.
01Mount Deverell: a documented locality
A 2019 European Journal of Mineralogy paper locates the deposits about 15 kilometres north-northwest of Milgun Station, in the central western Gascoyne region. It reports 850 tonnes of variscite production from open-cut mines between 1992 and 2005. These are past production figures. Mindat.org records the variscite in narrow, near-surface veins in shale and mudstone.
The same paper records a variety of secondary phosphate minerals, including turquoise, collinsite and gordonite. Variscite formed later than the rock around it.
02Variscite or turquoise?
They can look alike, but they are different minerals: turquoise contains copper and variscite does not. A photo can’t tell them apart; a gem lab can. The brown or golden veins running through the stone are the rock it formed in.
03Choosing and caring for variscite
Look at the green areas and host-rock pattern of the exact photographed stone. Protect jewellery from hard knocks, abrasive cleaning and harsh chemicals; follow the care instructions for the finished piece. Choose an available ring or necklace and check the confirmed price before adding to cart.
Gascoyne variscite and the Mount Deverell deposits
Mount Deverell and Mount Deverell East are documented variscite deposits near Milgun Station in Western Australia’s Gascoyne region. Scientific studies place them within a wider group of secondary phosphate minerals. The history is more specific than simply calling a stone Australian: it links the material to a locality and to the mineral assemblage studied there.
The existing production figures describe a historical period, not current stock or present mine output. Likewise, the age of surrounding rocks is not a date measured for your individual jewellery stone. Read the field history as geological context, while using the exact-stone provenance record for the source attributed to the offered piece.
Recognising the character of an individual variscite
Variscite and turquoise may both appear green, but they are different minerals. For choosing a piece, compare the balance between green areas and contrasting markings, their position in the circular cut, and how that composition sits in a ring or necklace. A locality name alone cannot predict that pattern.
The Gascoyne link below opens an available stone in the picker. It keeps the origin visible while you compare settings and finishes. Judge the photographed piece rather than expecting every stone from the field to have the same shade, matrix or surface design.
Questions about this material
Is the host rock’s age the stone’s age?
No. Secondary minerals can form long after their host rocks.
Is variscite another name for turquoise?
No. They are distinct minerals, even when they occur together or look similar.
