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28.74ct Natural Boulder Opal Deep Blue Fire

AU$895

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

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15.7ct Natural Boulder Opal Turquoise Blue Green

AU$895

Natural Solid Untreated Australian Boulder Opal
Weight: 15.7 ct
Dimensions: 28x11x5mm
Source: Winton, QLD, Australia
Size and weight are approximate
Note: This opal has minor fracture but still very stable.

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Opal Doublet 11.9ct Red Multicolor Fire

AU$888

Australian opal doublet showing strong red dominant fire with blue, green and orange flashes across a polished freeform cabochon, ideal for rings, pendants or custom jewellery. Suitable as a centre stone for bold jewellery design.

Type: Australian Opal Doublet
Origin: Australia
Dimensions: 21.4 x 17 x 3.2 mm
Weight: 11.9 ct

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1.2 ct Dark Opal Rainbow Lightning Ridge

AU$888

Source: Lightning Ridge, NSW, Australia
Dimensions: 9x7x3 mm approx
Weight: 1.2 ct approx

 

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Australian boulder opal, 2.08ct, freeform cabochon with multicolor fire (red, green, blue) on dark ironstone base, from Winton, Queensland
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Australian Boulder Opal Multicolor Fire 2.08ct

AU$881

Genuine Australian boulder opal features multicolor fire. Ready to make into a custom ring or jewelry design.
Dimensions:10 mm x 8 mm x 3 mm
Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 2.08ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

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Boulder Opal Ring 20.5ct Sterling Silver US7

AU$881

Vivid blue and green fire define this natural Australian boulder opal ring. Teardrop bezel set in sterling silver, perfect for a bold statement and October birthstone jewelry.

Ring Size: US7 (size change not available)
Dimensions: 20 x 12 x 5 mm approx.
Weight: 20.5ct approx. (whole ring)
Origin: Queensland, Australia
Opal Type: Natural Solid Boulder Opal
Treatment: None (100% natural, not a doublet or triplet)
Metal: S925 sterling silver, rhodium plated
Ring Band: 3.5 mm

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29.67ct Natural Boulder Opal Green Blue Fire

AU$881

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

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17.4ct Natural Boulder Opal Vivid Green Blue Gem

AU$881

Opal Details:
Type: Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 17.4ct Approx
Dimensions: 32 × 13.5 × 5mm Approx

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3.6ct Natural Crystal Boulder Opal Round

AU$874

Natural Solid Untreated Polished
Weight: 3.6ct approx
Dimensions: 10x9x5 mm approx
Source: Winton, QLD, Australia

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australian-boulder-opal-loose-gemstone-2-2ct-opal-galaxy
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Australian Boulder Opal Multicolor Fire 2.2ct

AU$867

Genuine Australian boulder opal features bright multicolor fire. Ready to make into a custom ring or jewelry design.
Dimensions: 11.6 mm x 8.6 mm x 3.2 mm
Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 2.2ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

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Boulder Opal Ring Multicolor Sterling Silver US7

AU$867

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 18.5x11x3.5 mm approx
Whole Ring Weight: 20 ct approx
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm approx
Ring Size: U7 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver

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Close view of 33.7 ct green boulder opal pendant with natural brown ironstone matrix in sterling silver
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Natural 33.7 ct green Australian boulder opal pendant shown worn on a silver necklace

Silver Boulder Opal Pendant Forrest Green 33.7 ct

AU$860
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52.7 ct purple blue boulder opal pendant from Winton Australia with natural brown matrix and sterling silver setting
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Natural Winton boulder opal pendant shown worn on a black necklace with purple blue color and natural brown matrix

Silver Boulder Opal Pendant 52.7 ct

AU$860
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Boulder Opal Pendant Sterling Silver Teal Green 31ct

AU$860

Type: Natural Solid Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 31ctw approx. including pendant and necklace
Dimensions: 13 x 25 x 4.5 mm approx
Color: teal green
Shape: Elongated horizontal polished cabochon
Metal: 925 sterling silver pendant and necklace (stamped)
Chain: 18 inch (slightly adjustable)
Treatment: 100% natural untreated opal

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6.95ct Crystal Boulder Opal

AU$860

6.95ct Australian crystal opal from Queensland displays vibrant purple and blue fire glowing through a translucent honey body. Expertly polished in an oval cabochon shape, this 100% natural and untreated gemstone is perfect for fine jewelry, custom settings, or as an October birthstone collector’s piece.

Type: Natural Solid Crystal Boulder Opal
Origin: Queensland, Australia
Dimensions: 20 × 12.1 × 4.3 mm (approx.)
Weight: 6.95 ct (approx.)
Color: Brilliant purple and blue fire through translucent body
Cut/Shape: Oval cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)

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1.24ct Dark Opal Rainbow Fire

AU$860

1.24ct Australian dark opal from Lightning Ridge features intense neon rainbow fire with vivid flashes of red, pink, green, cyan, yellow, blue, and violet. Cut in a teardrop cabochon and fully natural and untreated, this rare gemstone is ideal for fine jewelry and October birthstone designs.

Type: Natural solid dark opal gemstone (semi black opal, not transparent)
Origin: Lightning Ridge, New South Wales, Australia
Weight: 1.24 carat
Dimensions: 8.5 × 7 × 2.8 mm approx.
Color: Neon rainbow fire with red, green, blue, violet flashes
Cut / Shape: Teardrop cabochon
Treatment: 100% natural and untreated opal (not a doublet or triplet)
Use: Perfect for opal rings, pendants, engagement jewelry, or collector gemstones

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4.26ct Natural Crystal Opal Lightning Ridge

AU$860

100% Natural Solid Crystal Opal Polished Stone
Weight: 4.26 ct
Dimensions: 12x11x5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate

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Metallic Green Fire Lightning Ridge Black Opal Teardrop 1 ct

AU$853

Natural Solid Untreated Black Opal Polished Stone
Weight: 1 carat
Dimensions: 8.5x5x4mm
Source: Lightning Ridge, NSW, Australia
(Size and weight are approximate)

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Close view of 37.3 ct purple boulder opal pendant from Winton Australia set in rhodium plated sterling silver
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Natural 37.3 ct purple Australian boulder opal pendant shown worn on a silver necklace

Silver Boulder Opal Pendant Purple 37.3 ct

AU$833
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76.4 ct lilac purple crystal boulder opal pendant from Winton Australia set in rhodium plated S925 sterling silver
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Large Australian crystal boulder opal pendant with purple and pink color shown worn on a silver chain

Silver Crystal Boulder Opal Pendant Large Lilac Purple 76.4 ct

AU$833
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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.