18.2ct Solid Queensland Boulder Opal

Queensland Boulder Opal – Natural Loose Gemstone

Total Weight: 18.2cts

Origin: Queensland, Australia

Dimensions: 29mm x 14mm x 6mm (approx.)

Shape: Freeform

Colours: Greens with flashes of Purples, Reds, Greens, Blues

A gem of contrasts—smooth yet raw, dark yet luminous, this boulder opal is a rare fragment of earth and starlight, designed by nature and polished by hand.

Certificates of Authenticity

A digital Certificate of Authenticity is included with all opal pieces over $400 AUD, and available on request for any item. Each certificate confirms the opal’s origin, authenticity, and unique features.

Postage and Shipping Information

Australia: Free insured Express Post with Signature on Delivery. Orders arrive in 2–5 business days.
International: Free insured shipping on orders over $500 AUD (or $30 AUD under $500). Delivery in 7–14 business days.

We ship five days a week with handling times under one day.

USA customers: A 10% import tariff is added at checkout so there are no extra charges on arrival.