Australian Boulder Opal Specimen – Split Pair, Opalised Wood Pattern, Western QLD

This split pair of boulder opal specimens was mined in Western Queensland and cut through the middle to reveal a striking layered pattern — cream, gold-brown and blue running in vertical streaks that closely resemble the grain of fossilised wood. Because the two halves were cut from the same piece, they mirror each other almost exactly, making a matched pair rather than two unrelated stones. Displayed side by side, the pattern reads almost like a small painted landscape, and the resemblance to wood grain is part of what makes this pairing unusual.

About Boulder Opal

Boulder opal forms as veins of precious opal within ironstone matrix in the opal fields of Queensland — primarily Quilpie, Yowah and Winton. Unlike black opal from Lightning Ridge, the opal cannot be separated from its host rock; it's cut as a single solid piece, with the natural brown ironstone remaining as the stone's backing. This gives boulder opal its distinctive look — vivid colour against rich earth tones — and also makes it physically more durable than other opals, since the ironstone host is harder than the opal layer it carries.

Specifications

• Stone: Natural Australian boulder opal, split pair (2 matched pieces)
• Dimensions: 40 x 35 x 6mm
• Colour Play: Blue streaks through cream and gold-brown, in a wood-grain-like pattern
• Matrix: Natural ironstone boulder opal, layered patterning resembling opalised wood
• Origin: Western Queensland, Australia
• Availability: One-of-a-kind — 1 pair available

Caring for Your Specimen

This is a natural opal specimen meant for display rather than wear. Handle each piece by its edges rather than gripping the thinnest sections, and keep the pair somewhere they won't be knocked or dropped — opal is softer than many other minerals and chips easily along an edge. Avoid sudden temperature changes, such as moving them from a cold room straight into direct sun or near a heater. A soft, dry cloth is enough to keep them dust-free.

Provenance

Hand-selected by Joseph Bernecki, sourced direct from the Australian opal fields and set in his Sydney workshop. Meet him any weekend at The Rocks Market, stall under the bridge, Sydney. Read Joseph's story →

Common Questions