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3.64ct Natural Dark Opal -Teardrop Rainbow Fire
AU$1,233Opal Details:
Type: Natural, Solid, Untreated Dark Opal
Origin: Lightning Ridge, Australia
Dimensions: 15.3×9.8×3.7mm (approx.)
Weight: 3.64ct (approx.)
4.05ct Natural Dark Opal -Teardrop Rainbow Fire
AU$1,275Opal Details:
Type: Natural Solid Untreated Polished Dark Opal
Origin: Lightning Ridge Australia
Dimensions: 19.5×9.9×3.2mm (approx.)
Weight: 4.05ct (approx.)
5.26ct Natural Black Opal Heart Deep Blue Green Fire
AU$1,6395.26ct Solid Black Opal Heart from Lightning Ridge Australia with vivid blue and green fire. 100% natural untreated gemstone, ideal for collectors and fine jewelry design.
Type: Natural Solid Black Opal Heart
Origin: Lightning Ridge, Australia
Dimensions: 13.5 × 16.7 × 4 mm approx
Weight: 5.26ct approx
Color: Vivid blue and green fire on dark body tone
Cut/Shape: Heart cabochon polished
Treatment: 100% natural untreated solid opal
14.75ct Solid Boulder Opal Heart – Pastel Pink and Blue Fire
AU$1,568Opal Details:
Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 17.5×20.8×5mm (approx.)
Weight: 14.75ct (approx.)
14.9ct Natural Australian Boulder Opal Heart
AU$1,568Opal Details:
Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 16.8×20.4×5mm (approx.)
Weight: 14.9ct (approx.)
16.5ct Solid Boulder Opal Heart – Electric Blue Green Fire
AU$1,710Opal Details:
Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 19.1×22.5×4.2mm (approx.)
Weight: 16.5ct (approx.)
1.19ct Natural Dark Opal Heart – Green Fire
AU$684Opal Details:
Type: Natural, Solid, Untreated Dark Opal
Origin: Lightning Ridge, Australia
Dimensions: 6.5×9.7×2.8mm (approx.)
Weight: 1.19ct (approx.)
1.11ct Black Crystal Opal Heart – Green & Blue Fire
AU$641Opal Details:
Type: Natural, Solid, Untreated Black Crystal Opal
Origin: Lightning Ridge, Australia
Dimensions: 9.3×7.3×2.9mm (approx.)
Weight: 1.11ct (approx.)
0.54ct Natural Black Opal Heart – Green & Violet Fire
AU$513Opal Details:
Type: Natural, Solid, Untreated Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 6.1x8x1.7mm (approx.)
Weight: 0.54ct (approx.)
0.8ct Black Crystal Opal Heart – Blue and Violet Fire
AU$534Opal Details:
Type: Natural, Solid, Untreated Black Crystal Opal
Origin: Lightning Ridge, Australia
Dimensions: 7×8.4×2.5mm (approx.)
Weight: 0.8ct (approx.)
0.96ct Black Opal Heart – Vivid Green & Blue Fire
AU$784Opal Details:
Type: Natural, Solid, Untreated Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 7.1 × 10.1 × 2.2 mm (approx.)
Weight: 0.96ct (approx.)
1.99ct Natural Black Opal Heart – Green & Violet Fire
AU$784Opal Details:
Type: Natural, Solid, Untreated Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 13.7 × 9.9 × 2.5 mm (approx.)
Weight: 1.99ct (approx.)
8.32ct Dark Opal Heart – Neon Green Blue Fire
AU$2,052Opal Details:
Type: Natural, Solid, Untreated, Polished Dark Opal
Origin: Lightning Ridge, Australia
Dimensions: 17.4 × 23.6 × 3.1 mm (approx.)
Weight: 8.32ct (approx.)
3.2ct Natural Black Opal Heart Neon Blue Green Fire
AU$1,454Type: Natural Solid Untreated Black Opal
Origin: Lightning Ridge Australia
Dimensions: 12.3 × 9.4 × 4.2 mm approx
Weight: 3.2ct approx
7.3ct Natural Dark Opal Oval Stardust Pinfire
AU$1,710Â Â Â Â Opal Details:
- Type: Natural Dark Opal
- Origin: Lightning Ridge, Australia
- Dimensions: Approx. 18.2 × 13 × 4.3 mm
- Weight: Approx. 7.3ct
While the potch on the back of this opal may look like it; this opal is not a doublet. It is a full solid natural opal.
1.94ct Natural Black Opal Round Blue & Green Fire
AU$392Opal Details:
- Type: Natural Black Opal
- Origin: Lightning Ridge, Australia
- Dimensions: 9.7 × 9.4 × 3 mm
- Weight: 1.94ct
1.5ct Natural Black Opal Teardrop Electric Neon Orange
AU$1,169Opal Details:
- Type: Natural Black Opal
- Origin: Lightning Ridge, Australia
- Dimensions: 11.7 × 8.8 × 2.4 mm
- Weight: 1.5ct
Black Opal Gemstone Green Yellow Fire 1.79ct
AU$335Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 10.2 × 7.7 × 3.5 mm (approx.)
Weight: 1.79ct (approx.)
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
4.63ct Natural Black Opal Oval Blue Green
AU$748Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 19.6 × 8.2 × 4 mm (approx.)
Weight: 4.63ct (approx.)
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
Please note: camera may show slight magenta tones, but the opal appears blue to the eye.
Black Opal Electric Green Yellow 0.77ct
AU$705Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 11 × 7.5 × 1.6 mm
Weight: 0.77ct
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
Natural Australian Opal
Explore genuine natural Australian opals from the world’s premier opal fields including Lightning Ridge, Queensland, and South Australia. Our collection features stunning black opals with intense color displays, vibrant boulder opals with natural ironstone backing, luminous crystal opals showcasing transparency, and elegant white opals with soft pastel hues. Each opal is ethically sourced, 100 percent natural and untreated, displaying unique play of color with brilliant flashes of red, blue, green, and rainbow patterns that make every stone genuinely irreplaceable.
Shop loose opal gemstones perfect for custom jewelry creation, finished opal rings and pendants in silver, gold, and platinum settings. Whether you are a collector seeking investment quality specimens, a jeweler sourcing premium gemstones, or someone drawn to the mesmerizing beauty of Australian opals, our curated selection delivers exceptional quality, authenticity, and the timeless appeal of Australia’s national gemstone celebrated worldwide as the October birthstone.
Natural Australian Opal FAQs
What is Australian opal?
Australian opal is a precious gemstone formed from silica deposits that displays unique play of color with flashes of blue, green, red, orange, and rainbow hues. Australia produces over 95 percent of the world’s precious opals from mining fields including Lightning Ridge, Queensland, and South Australia, making it the global center for opal production.
What are the different types of Australian opals?
The main types of Australian opals include black opal from Lightning Ridge with dark backgrounds enhancing color displays, boulder opal from Queensland with natural ironstone backing, crystal opal featuring transparency and luminosity, and white opal from South Australia with lighter milky backgrounds and pastel colors.
How do I know if my Australian opal is real?
Real Australian opals display natural play of color that shifts with movement and viewing angle, have irregular patterns unique to each stone, and show depth when examined closely. Doublets and triplets have visible layers when viewed from the side, while solid opals are cut from single pieces. Professional gemological testing can confirm authenticity definitively.
How do I care for my Australian opal jewelry?
Remove opal jewelry before swimming, bathing, or using harsh chemicals. Clean gently with mild soap and lukewarm water using a soft cloth. Avoid extreme temperature changes and prolonged direct sunlight. Store opals separately in soft pouches to prevent scratching from harder gemstones. With proper care, Australian opals remain beautiful for generations.
What is the difference between black opal and white opal?
Black opal features a dark background that makes colors appear more vivid and dramatic, found primarily at Lightning Ridge. White opal has a lighter milky background displaying softer pastel colors, sourced mainly from South Australian fields like Coober Pedy. Both are genuine precious opals with play of color.
Can Australian opals be worn every day?
Yes, Australian opals can be worn daily with reasonable care. Boulder opals are particularly durable due to their natural ironstone backing. Remove opal jewelry during activities involving impacts, chemicals, or extreme temperatures. Rings may require more careful wear than pendants or earrings due to exposure.
Why is Lightning Ridge famous for opals?
Lightning Ridge is famous for producing the world’s finest black opals with exceptional color displays on dark backgrounds. The unique geological conditions in this New South Wales region created over millions of years result in opals found nowhere else on Earth, making Lightning Ridge material highly sought after by collectors worldwide.