Boulder Opal Pendant – 18K Gold, 12×7mm, Green Rolling Flash

This 12×7mm boulder opal sits in a close bezel of solid 18K yellow gold — a setting that holds the stone firmly at the edges and lets its colour breathe at the centre. The stone's semi-dark body gives the colour real contrast without the heaviness of a fully dark backdrop, and its green rolling flash is exactly that: a continuous sweep of green that moves across the face of the stone as you tilt it, like a wave of colour travelling through the opal rather than sitting still. It hangs on an 18K gold-plated chain at 45cm — a neat length that sits mid-collar, suited to everyday wear or a night out. One stone, one setting, one piece.

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: Boulder Opal
• Dimensions: 12×7 mm
• Colour Play: Green
• Body Tone: Semi-dark
• Pattern: Rolling flash
• Setting: Bezel, solid 18K yellow gold
• Chain: 18K yellow gold-plated, 45 cm
• Origin: Queensland, Australia
• Availability: One-of-a-kind — 1 piece available

Caring for Your Opal

Opal is softer than diamond or sapphire, so a little care goes a long way. See Opal Care for storage, cleaning, and what to avoid.

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