Boulder Opal Earrings – 18K Gold, 3.90ct TCW, Bright Flash, Diamond Accents

Flash-of-colour boulder opal in a pair of earrings is a rare find — most pieces this size get cut as pendants where the full face can be shown. These two stones move together, catching light from the same angles and throwing the same vivid flash across both. The 18K yellow gold bezel wraps each stone cleanly, and small bezel-set diamonds sit beside the opal at each setting — not competing with the colour play, just framing it. At 3.90ct total, these earrings carry real presence without being heavy.

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 (solid, natural)
• Total Carat Weight (TCW): 3.90ct (pair)
• Brightness: Bright
• Pattern: Flash of colour
• Setting: Bezel
• Accent Stones: Bezel-set diamonds
• Metal: 18K yellow gold
• 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