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37.57ct Natural Boulder Opal | Blue Green Fire
AU$976100% Natural Boulder Opal
Weight: 37.57 ct
Dimensions: 49.5×16.5×6 mm
Source: Winton, QLD, Australia
23.94ct Natural Boulder Opal
AU$827100% Natural Boulder Opal
Weight: 23.94 ct
Dimensions: 37x15x5 mm
Source: Winton, QLD, Australia
24.69ct Solid Boulder Opal Vivid Blue Green Purple
AU$1,13324.69ct natural boulder opal from Winton Queensland Australia displays vibrant green cyan fire with purple blue gradient color body. 100% natural, untreated loose opal gemstone ideal for custom opal jewelry and collectors.
44.69ct Large Natural Boulder Opal Winton Blue Fire
AU$1,062
Opal Details
Type: Natural Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 47 × 17.5 × 6.2 mm approx
Weight: 44.69 ct approx
29.45ct Natural Boulder Opal Large
AU$1,589100% Natural Boulder Opal
Weight: 29.45 ct
Dimensions: 34×16.5×6 mm
Source: Winton, QLD, Australia
6.84ct Natural Dark Opal – Oval Neon Multicolor
AU$3,648100% Natural Dark Opal (Semi Black Opal)
Weight: 6.84 ct
Dimensions: 20x14x4 mm
Source: Lightning Ridge, NSW, Australia
0.76ct Natural Black Crystal Opal Lightning Ridge
AU$1,090100% Natural Lightning Ridge Black Crystal Opal
Weight: 0.76 ct
Dimensions: 10x7x1.2 mm
Source: Lightning Ridge, NSW, Australia
1.42ct Natural Crystal Opal Lightning Ridge
AU$926100% Natural Lightning Ridge Crystal Opal
Weight: 1.42 ct
Dimensions: 10x6x3 mm
Source: Lightning Ridge, NSW, Australia
1.14ctw Natural Crystal Opal Pair Lightning Ridge
AU$520100% Natural Lightning Ridge Crystal Opal
Total Weight: 1.14 ctw
Dimensions: 10.2x5x1 mm, 10.8×6.5×1.8 mm
Source: Lightning Ridge, NSW, Australia
0.7ct Natural Crystal Opal Lightning Ridge
AU$309100% Natural Lightning Ridge Crystal Opal
Weight: 0.7 ct
Dimensions: 7x5x2.2 mm
Source: Lightning Ridge, NSW, Australia
0.93ct Natural Crystal Opal Lightning ridge
AU$335100% Natural Lightning Ridge Crystal Opal
Weight: 0.93 ct
Dimensions: 8x7x2 mm
Source: Lightning Ridge, NSW, Australia
0.83ct NaturalCrystal Opal Lightning Ridge
AU$335100% Natural Lightning Ridge Crystal Opal
Weight: 0.83 ct
Dimensions: 9.5×6.5×1.5 mm
Source: Lightning Ridge, NSW, Australia
0.8ct Crystal Opal Oval Multi Color Fire
AU$335💎 Opal Details:
- Type: Natural Solid Crystal Opal
- Origin: Lightning Ridge, NSW, Australia
- Dimensions: 8.5 x 7 x 2 mm
- Weight: 0.8ct
Size and weight are approximate
Boulder Opal Pendant 64ct Blue Purple Fire
AU$17864ct boulder opal pendant with blue and purple fire in natural ironstone. Solid untreated Australian opal on adjustable cord necklace, ready to wear.
Dimensions: 32 × 19.5 × 7 mm approx
Weight: 64 ct approx
Origin: Koroit, Queensland Australia
Opal Type: Natural Solid Wood Fossil Boulder Opal
Necklace: Brown adjustable cord
Treatment: 100% natural untreated opal
39.6ct Solid Boulder Opal Pendant Necklace
AU$135This 39.6ct solid Australian wood fossil boulder opal pendant from Winton Queensland shows vivid flashes of blue and green fire against a rich brown matrix. Formed naturally as opal replaced ancient fossilized wood this pendant is both a gemstone and a piece of history.
Boulder Opal Pendant 16.6ct
AU$385Type: Natural Solid Untreated Boulder Opal
Origin: Queensland, Australia
Dimensions: 25.5 × 12 × 5 mm approx
Weight: 16.6ct approx
Color: White base with bright green, pink, and blue fire
Shape: Polished pendant with adjustable black cord
44ct Boulder Opal Pendant Freeform Earthy
AU$214100% Natural Australian Opal, Drilled
Source: Winton, QLD, Australia
Dimensions: 31.5x18x7mm
Weight: 44 ct
(Size and weight are approximate)
Adjustable Black Rope Necklace
2.72ct Dark Opal MultiColor Fire
AU$1,026Source: Lightning Ridge, NSW, Australia
Dimensions: 13x7x4 mm approx
Weight: 2.72ct approx
1.2 ct Dark Opal Rainbow Lightning Ridge
AU$912Source: Lightning Ridge, NSW, Australia
Dimensions: 9x7x3 mm approx
Weight: 1.2 ct approx
3.73ct Natural Crystal Opal Lightning Ridge
AU$2,052100% Natural Australian Opal, Untreated, Polished
Dimensions: 15.5x12x4.5 mm
Weight: 3.73 ct
Source: Lightning Ridge, NSW, Australia
(Size and weight are approximate)
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.