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146.94ct Large Natural Koroit Boulder Opal

AU$705

100% Natural Polished Boulder Opal
Weight: 146.94 ct
Dimensions: 39x30x13 mm
Source: Koroit,QLD, Australia

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34.75ct Large Natural Koroit Boulder Opal

AU$323

100% Natural Polished Boulder Opal
Weight: 34.75 ct
Dimensions: 38×22.5×7 mm
Source: Koroit,QLD, Australia

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15.28ct Natural Boulder Opal Blue Green

AU$406

100% Natural Polished Boulder Opal
Weight: 15.28 ct
Dimensions: 38x15x4.5 mm
Source: Winton,QLD, Australia

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4.8ct Natural White Opal Cooberpedy

AU$805

100% Natural White Opal Polished Stone
Dimensions:19x9x4 mm
Weight: 4.8 ct
Source: Coober Pedy,SA, Australia
Size and weight are approximate

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3.75ct Natural Dark Opal Rolling Mackerel Pattern

AU$1,311

100% Natural Dark Opal Polished Stone
Weight: 3.75 ct
Dimensions: 18x8x4.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate

This Opal is eligible to purchase on a Payment Plan

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1.4ct Natural Dark Opal Lightning Ridge

AU$1,047

100% 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)

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1.23ct Natural Dark Opal Rainbow Rolling Ribbon Pattern

AU$1,254

100% 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)

This Opal is eligible to purchase on a Payment Plan

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15.3ct Natural Boulder Opal Deep Purple Blue Fire

AU$563

100% Natural Boulder Opal
Weight: 15.3 ct
Dimensions: 21.5x12x4.5 mm
Source: Winton, QLD, Australia

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24.8ct Solid Boulder Opal Electric Blue Purple Fire

AU$499

24.80ct 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.

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18.44ct Natural Boulder Opal Deep Purple Fire

AU$356

100% Natural Boulder Opal
Weight: 18.44 ct
Dimensions: 28x15x5 mm
Source: Winton, QLD, Australia

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22.44ct Solid Boulder Opal Purple Blue

AU$335

22.44ct 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. 

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14.43ct Boulder Opal Purple Blue

AU$314

100% Natural Boulder Opal
Weight: 14.43 ct
Dimensions: 31×11.5×4.5 mm
Source: Winton, QLD, Australia

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9.98ct Natural Boulder Opal Purplish Blue Green

AU$613

100% Natural Boulder Opal
Weight: 9.98 ct
Dimensions: 34x8x4mm
Source: Winton, QLD, Australia

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16.22ct Natural Boulder Opal Blue Green Fire

AU$520

100% Natural Boulder Opal
Weight: 16.22 ct
Dimensions: 33x14x5 mm
Source: Winton, QLD, Australia

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23.11ct Natural Boulder Opal Deep Blue Fire

AU$599

100% Natural Boulder Opal
Weight: 23.11 ct
Dimensions: 29.5x17x5 mm
Source: Winton, QLD, Australia

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28.81ct Natural Boulder Opal – Turquoise Blue Green

AU$534


 Opal Details:

  • Type: Natural, Solid, Untreated, Polished Boulder Opal

  • Origin: Winton, QLD, Australia

  • Dimensions: 30 × 18 × 6 mm (approx.)

  • Weight: 28.81 ct (approx.)

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29.67ct Natural Boulder Opal Green Blue Fire

AU$905

100% Natural Boulder Opal
Weight: 29.67 ct
Dimensions: 36x15x5 mm
Source: Winton, QLD, Australia

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28.74ct Natural Boulder Opal Deep Blue Fire

AU$919

100% Natural Boulder Opal
Weight: 28.74 ct
Dimensions: 39x15x5 mm
Source: Winton, QLD, Australia

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23.38ct Natural Boulder Opal Neon Blue Fire

AU$1,112

100% Natural Boulder Opal
Weight: 23.38 ct
Dimensions: 34x13x5 mm
Source: Winton, QLD, Australia

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20ct Natural Boulder Opal Large Purple

AU$713

100% 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.

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.

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.

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.

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.

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.

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.