Boulder Opal Earrings – 18K Gold, 6.24ct TCW, Green, Diamond Accents

At 6.24 carats combined, this is a substantial pair. Boulder opal earrings in this weight range are genuinely uncommon — the ironstone matrix that makes boulder opal durable also makes it heavier than a comparable crystal or black opal, so pair weights above 5ct represent real stone. Both stones are bezel-set in 18K yellow gold with small diamond accents framing each opal, the diamonds throwing a quiet sparkle that doesn't compete with the green colour play running across the semi-dark boulder body. These are earrings that carry presence without demanding it.

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
• Total Carat Weight (TCW): 6.24ct (pair)
• Colour Play: Strong green
• Body Tone: Semi-dark
• Setting: Bezel
• Accent Stones: Small bezel-set diamonds
• 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