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2.31ct Natural Dark Opal Rainbow Fire
AU$1,817Opal: 100% Natural, Solid, Untreated, PolishedÂ
Source: Lightning Ridge, Australia
Dimensions: 11x10x2.5 mm
Weight: 2.31 ct
(Size and weight are approximate)
2.2ct Natural Black Opal Blue Fire
AU$549100% Natural Solid Black Opal Polished Stone
Weight: 2.20 ct
Dimensions: 12.5×7.5×4 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Partially Transparent
1.71ct Natural Black Crystal Opal Green Blue Fire
AU$976100% Natural Solid Black Crystal Opal Polished Stone
Weight: 1.71 ct
Dimensions: 10.8×8.2×3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Black Opal 1.04ct Teal Blue Green
AU$691Natural Australian black opal gemstone with vivid multicolor fire, ideal for opal ring, opal pendant, or fine opal jewelry. Australian opal perfect for October birthstone jewelry and a meaningful gift for her.
Type: Natural Solid Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 6.8 x 6.8 x 3 mm approx
Weight: 1.04ct approx
3.4ct Natural Boulder Opal Deep Blue Fire
AU$456100% Natural Solid Boulder Opal Polished Stone
Weight: 3.4 ct
Dimensions: 14.8×8.2×3 mm
Source: Winton,QLD, Australia
Size and weight are approximate
3.91ct Natural Boulder Opal Blue Fire
AU$428100% Natural Solid Boulder Opal Polished Stone
Weight: 3.91 ct
Dimensions: 16.5×6.5×3.5 mm
Source: Winton,QLD, Australia
Size and weight are approximate
7.52ct Natural Boulder Opal Blue Fire
AU$363100% Natural Solid Boulder Opal Polished Stone
Weight: 7.52 ct
Dimensions: 12×12.5×5.5 mm
Source: Winton,QLD, Australia
Size and weight are approximate
5.85ct Natural Boulder Opal
AU$406100% Natural Solid Boulder Opal Polished Stone
Weight: 5.85 ct
Dimensions: 15.5x11x3 mm
Source: Winton,QLD, Australia
Size and weight are approximate
1.57ct Natural Boulder Opal
AU$306100% Natural Solid Boulder Opal Polished Stone
Weight: 1.57 ct
Dimensions: 12x6x2 mm
Source: Winton,QLD, Australia
Size and weight are approximate
3.03ct Natural Boulder Opal
AU$306100% Natural Solid Boulder Opal Polished Stone
Weight: 3.03 ct
Dimensions: 19×6.5×2.2 mm
Source: Winton,QLD, Australia
Size and weight are approximate
4.31ct Natural Boulder Opal Vivid Blue Green
AU$2354.31ct Australian boulder opal from Winton Queensland features vivid blue and green fire glimmering across its natural ironstone body. Expertly polished in a curved freeform shape, this 100% natural untreated gemstone is ideal for fine jewelry, October birthstone gifts, or collector investment.
Type: Natural Solid Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 19 x 6 x 3 mm (approx.)
Weight: 4.31ct (approx.)
Color: Vivid blue and green fire with natural ironstone matrix
Cut/Shape: Curved freeform polished cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
2.74ct Natural Dark Opal Rolling Rainbow Fire
AU$1,660Bright Rolling Rainbow Fire
100% Natural Solid Dark Opal
Weight: 2.74 ct
Dimensions: 13.5x10x3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
6.02ctw Natural Boulder Opal Set Blue Green
AU$506100% Natural Solid Boulder Opals
Total Weight: 6.02 btw
Size: Marquise – 24×5.5×3.8 mm
Oval – 9.5x5x3 mm
Source: Winton,Qld,Australia
45.77ct Large Round Oval Koroit Boulder Opal
AU$534Opal Details:
Natural Solid UntreatedÂ
Weight: 45.77 ct approx
Dimensions: 30x27x5 mm approxÂ
Source: Koroit,QLD, Australia
22.68ct Double Sided Natural Koroit Boulder Opal
AU$599100% Natural Polished Boulder Opal
Weight: 22.68 ct
Dimensions: 36×17.5×3.5 mm
Source: Koroit,QLD, Australia
39.17ct Double Sided Koroit Boulder Opal
AU$385100% Natural Polished Boulder Opal
Weight: 39.17 ct
Dimensions: 32x23x7 mm
Source: Koroit,QLD, Australia
92.35ct Natural Koroit Boulder Opal Large Teardrop
AU$470Type: Natural Solid Untreated Boulder Opal
Origin: Koroit, Queensland, Australia
Dimensions: 40 x 28 x 10 mm approx
Weight: 92.35ct approx
Color: Orange blue fire in natural boulder opal
Use: Ideal for custom opal ring, pendant, or fine jewelry
5.91ct Solid Black Opal Vivid Neon Blue Green Fire
Original price was: AU$7,232.AU$5,558Current price is: AU$5,558.Type: Natural, Solid, Untreated Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 19.5×8.5×5mm approx.
Weight: 5.91ct approx.)
26.81ct Double Sided Vein Australian Koroit Boulder Opal
AU$413100% Natural Polished Boulder Opal
Weight: 26.81 ct
Dimensions: 46.5×12.5×4.5 mm
Source: Koroit, QLD, Australia
78.76ct Large Boulder Opal Teardrop Veins
AU$385100% Natural Polished Boulder Opal
Weight: 78.76 ct
Dimensions: 45.5×22.5×8 mm
Source: Koroit,QLD, Australia
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.