Boulder Opal Earrings – 18K Gold, 10.46ct TCW, Blue-Green, Diamond Accent

This pair of boulder opal earrings carries a mesmerising blue-green hue across two free-shaped stones from Queensland — no two boulder opals cut the same way, so each earring has its own outline rather than matching a mould. Together they weigh 10.46ct, set in 18K yellow gold with a small diamond accent at the top of each, adding a point of sparkle above the opal without competing with it. The natural ironstone backing stays part of the stone, giving each earring real weight and durability along with its colour.

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(s): Boulder Opal
• Total Carat Weight (TCW): 10.46ct (pair)
• Colour Play: Blue-green
• Accent Stones: Diamond accent (one per earring)
• Metal: 18K Yellow Gold
• Closure Type: Post-and-butterfly
• Origin: Queensland, Australia
• Availability: One-of-a-kind — 1 pair 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