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146.94ct Large Natural Koroit Boulder Opal
AU$705100% Natural Polished Boulder Opal
Weight: 146.94 ct
Dimensions: 39x30x13 mm
Source: Koroit,QLD, Australia
34.75ct Large Natural Koroit Boulder Opal
AU$323100% Natural Polished Boulder Opal
Weight: 34.75 ct
Dimensions: 38×22.5×7 mm
Source: Koroit,QLD, Australia
15.28ct Natural Boulder Opal Blue Green
AU$406100% Natural Polished Boulder Opal
Weight: 15.28 ct
Dimensions: 38x15x4.5 mm
Source: Winton,QLD, Australia
4.8ct Natural White Opal Cooberpedy
AU$805100% Natural White Opal Polished Stone
Dimensions:19x9x4 mm
Weight: 4.8 ct
Source: Coober Pedy,SA, Australia
Size and weight are approximate
3.75ct Natural Dark Opal Rolling Mackerel Pattern
AU$1,311100% Natural Dark Opal Polished Stone
Weight: 3.75 ct
Dimensions: 18x8x4.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
1.4ct Natural Dark Opal Lightning Ridge
AU$1,047100% Natural Dark Opal / Semi Black Opal Polished stone
Weight : 1.40 ct
Dimension : 10x7x2 mm
Source : Lightning Ridge, NSW, Australia
(Size and weight are approximate)
1.23ct Natural Dark Opal Rainbow Rolling Ribbon Pattern
AU$1,254100% Natural Dark Opal / Semi Black Opal Polished stone
Weight : 1.23 ct
Dimension : 10x7x2 mm
Source : Lightning Ridge, NSW, Australia
(Size and weight are approximate)
15.3ct Natural Boulder Opal Deep Purple Blue Fire
AU$563100% Natural Boulder Opal
Weight: 15.3 ct
Dimensions: 21.5x12x4.5 mm
Source: Winton, QLD, Australia
24.8ct Solid Boulder Opal Electric Blue Purple Fire
AU$49924.80ct natural solid boulder opal from Winton, Australia, features bright electric blue and purple fire. Untreated and genuine, a perfect centerpiece for custom rings, pendants, or unique jewelry creations.
18.44ct Natural Boulder Opal Deep Purple Fire
AU$356100% Natural Boulder Opal
Weight: 18.44 ct
Dimensions: 28x15x5 mm
Source: Winton, QLD, Australia
22.44ct Solid Boulder Opal Purple Blue
AU$33522.44ct natural boulder opal from Winton Queensland Australia displays vibrant blue purple gradient fire with distinctive ironstone matrix. 100% natural, untreated loose opal gemstone ideal for custom opal jewelry and collectors.Â
14.43ct Boulder Opal Purple Blue
AU$314100% Natural Boulder Opal
Weight: 14.43 ct
Dimensions: 31×11.5×4.5 mm
Source: Winton, QLD, Australia
9.98ct Natural Boulder Opal Purplish Blue Green
AU$613100% Natural Boulder Opal
Weight: 9.98 ct
Dimensions: 34x8x4mm
Source: Winton, QLD, Australia
16.22ct Natural Boulder Opal Blue Green Fire
AU$520100% Natural Boulder Opal
Weight: 16.22 ct
Dimensions: 33x14x5 mm
Source: Winton, QLD, Australia
23.11ct Natural Boulder Opal Deep Blue Fire
AU$599100% Natural Boulder Opal
Weight: 23.11 ct
Dimensions: 29.5x17x5 mm
Source: Winton, QLD, Australia
28.81ct Natural Boulder Opal – Turquoise Blue Green
AU$534
 Opal Details:
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Type: Natural, Solid, Untreated, Polished Boulder Opal
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Origin: Winton, QLD, Australia
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Dimensions: 30 × 18 × 6 mm (approx.)
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Weight: 28.81 ct (approx.)
29.67ct Natural Boulder Opal Green Blue Fire
AU$905100% Natural Boulder Opal
Weight: 29.67 ct
Dimensions: 36x15x5 mm
Source: Winton, QLD, Australia
28.74ct Natural Boulder Opal Deep Blue Fire
AU$919100% Natural Boulder Opal
Weight: 28.74 ct
Dimensions: 39x15x5 mm
Source: Winton, QLD, Australia
23.38ct Natural Boulder Opal Neon Blue Fire
AU$1,112100% Natural Boulder Opal
Weight: 23.38 ct
Dimensions: 34x13x5 mm
Source: Winton, QLD, Australia
20ct Natural Boulder Opal Large Purple
AU$713100% Natural Boulder Opal
Weight: 20 ct
Dimensions: 34.5x10x4.5 mm
Source: Winton, 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.