100% Solid Australian Opals • Carefully Selected & Finished in Australia • Direct from our Family Business — No Retail Markup • Worldwide Delivery
6.9ct Solid Andamooka Matrix Opal Ring 'Stardust Summer' | 925 Sterling Silver | Solid Australian Opal
Free shipping within Australia and flat rate international delivery.
Sourced from Australia’s best opal fields. Carefully selected, cut and finished by our family in Queensland.
Burdekin Horizon ~ Bold and grounding, this boulder opal mirrors the wide horizons and rugged beauty of Queensland’s outback country.
Ring Size 7.5 (O)
Please Note: This is a Treated Matrix Opal.
What is Sugar Treatment? Matrix opal features opal within its host rock. To enhance its colours, the stone is soaked in a sugar solution then heated in acid, darkening the matrix and creating a vivid contrast that brings out the opal's natural brilliance. This process is used exclusively on Matrix opal.
Why Andamooka Treated Matrix Opal? At Iona Opal Australia, the only treated opal we sell is Andamooka Matrix Opal — genuine, ethically and sustainably sourced. Our Coober Pedy, Lightning Ridge, Mintabie and Queensland Boulder Opals are all treatment-free.
✔ Solid Australian opal (no doublets or triplets)
✔ Hand-cut and set in Australia
✔ Completely one of a kind
Priced direct from the cutter and maker — no retail markup.
This is the exact piece you’ll receive. Only one exists — once it’s gone, it’s gone.
Choose options
Opal Weight - 6.9ct
Opal Dimensions - 11mm x 13mm x 3mm (approx.)
Opal Origin - Andamooka Opal Fields, South Australia
Opal Brightness - B2 to B3 - Moderately Bright to Bright
Opal Body Tone -
Opal Shape - Freeform
Opal Colours
Metal Type - 925 Sterling Silver
Chain Length and Type (if applicable) - N/A
Earring Type (if applicable) - N/A
✔ Sourced from Australia’s best opal fields and carefully selected, cut and finished by our family
✔ Certified Opal Specialists · IGS Member · Opal Association of Australia
✔ Fully insured worldwide shipping
✔ Straightforward return policy
✔ Pay in instalments with Zip, Klarna & PayPal
Opal colour will change depending on lighting — this is part of what makes each stone unique.
You will receive the exact piece shown in these photos.
Each opal or jewellery piece is individually photographed and completely one-of-a-kind — no stock images, no substitutions.
Certificates of Authenticity
Every piece of jewellery and loose opal includes a digital Certificate of Authenticity, confirming its genuine Australian opal provenance. Your certificate is available for download from your order confirmation page following purchase.
Postage and Shipping Information
Australia: Express Post is FREE. Orders generally arrive in 2–5 business days.
International: $35AUD Standard Post. Orders generally arrive 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.
