Corefire is a 4.3ct boulder opal polished to reveal glowing green and blue fire streaking through a rich ironstone matrix. Its bold contrast and natural depth make it the perfect focal stone for a custom ring or pendant—small enough to wear comfortably, but striking enough to command attention.
This stone features a well-balanced shape and a smooth, high-polish surface, making it easy to set while still preserving its organic character. Sourced from Queensland, it's a showcase of Australia's finest natural opal artistry.
Corefire — Polished Boulder Opal (4.3ct)
Carat 4.3 Length 11.5mm, Width 9.3mm, Height 3.5mm
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1x polished boulder opal (4.3ct)
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Vivid ironstone with bold green-blue fire
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Ready for setting in a ring, pendant, or custom design
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Carefully shaped and polished to reveal maximum color
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Sourced from Queensland’s opal fields
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Packaged securely with protective cushioning
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Listing includes full product specs (carat, dimensions, etc.)
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Jewellers seeking a bold center stone for a custom ring or pendant
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Collectors who love high-contrast opals with natural structure
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Gift buyers looking for a one-of-a-kind gemstone to mark a special moment
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Anyone drawn to strong visual texture and color in wearable form
Please note: The images and videos on our site are carefully crafted to showcase the vibrant play of color in our opals. While they provide an excellent preview, there’s truly no substitute for experiencing the gems in natural light with your own eyes. We encourage you to keep this in mind when making your purchase.
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