Product Description

3250 CODE10

An extraordinary 39.93 carat Natural Winton Matrix Boulder Opal from Queensland, Australia, displaying striking electric-blue opal veins running through a rich natural ironstone matrix. This impressive gemstone showcases the dramatic contrast and natural artistry that have made Australian boulder opals some of the most collectible opals in the world.

Expertly fashioned into a polished rectangle cabochon, the stone reveals vivid flashes of intense cobalt blue and royal blue opal naturally embedded within the host rock. These luminous opal veins create a captivating network-like pattern across the surface, making every specimen completely unique.

Originating from the renowned Winton opal fields of Queensland, this gemstone represents one of Australia's most fascinating natural treasures. The combination of durable ironstone and precious opal creates exceptional character while preserving the natural geological beauty formed over millions of years.

With an impressive weight approaching 40 carats, this specimen offers remarkable visual presence and collector appeal. Its large size, attractive patterning, and vibrant blue opal flashes make it suitable for high-end custom jewelry, display collections, or investment-grade gemstone portfolios.

Gemstone Specifications

Gemstone: Natural Boulder Opal

Variety: Winton Matrix Boulder Opal

Weight: 39.93 Carats

Shape: Rectangle Cabochon

Origin: Queensland, Australia

Body Tone: Natural Ironstone Matrix

Play-of-Color: Electric Blue Vein Pattern

Dominant Color: Royal Blue

Luster: Vitreous

Treatment: None Reported

Key Features

✔ Natural Australian Boulder Opal

✔ Rare Winton Matrix Variety

✔ Impressive 39.93 Carat Size

✔ Electric Blue Opal Veins

✔ Collector-Grade Specimen

✔ Unique Natural Pattern

✔ Untreated Natural Stone

✔ Queensland Origin

✔ Statement Display Gemstone

✔ One-of-a-Kind Formation