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Sterling Silver Green Blue Boulder Opal Ring 28.5 ct US 10

AU$1,388

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 20×14.5×4.5 mm
Whole Ring Weight: 28.5 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US10 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

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3.91ct Natural Faceted Crystal Opal

AU$1,381

Opal Details:

Opal: Natural, Solid, Untreated, Faceted
Source: Andamooka, Australia
Dimensions: 11x11x6.2 mm
Weight: 3.91 ct
Size and Weight are approximate

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54.2ct Natural Boulder Opal Large

AU$1,332

Natural Solid Untreated Boulder Opal Polished Stone
Weight: 54.2 ct
Dimensions: 43.5x21x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate

This Opal is eligible to purchase on a Payment Plan

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Boulder Opal Sparkling Fire 1.85ct

AU$1,318

Genuine Australian boulder opal features sparkling Multicolor fire. Cut with a highly polished smooth surface, this loose stone is ready to make into a custom ring or high end jewelry design.

Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 11.5 mm x 7 mm x 3.5 mm
Weight: 1.85ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 11.4 mm x 7.3 mm x 3.5 mm
Weight: 2.1ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

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4.45ct Crystal Boulder Opal

AU$1,318

4.45ct Australian crystal boulder opal featuring vibrant green and blue fire across a translucent body. Natural and untreated, ideal for high-end jewelry, collectors, or October birthstone gifts.

Type: Natural Solid Crystal Opal
Origin: Queensland, Australia
Dimensions: 15.7 × 11.1 × 4.7 mm (approx.)
Weight: 4.45 ct (approx.)
Color: Bright green-blue fire on translucent body
Cut/Shape: Teardrop cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)

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3.29ct Natural Dark Opal Freeform Neon Rainbow Fire

AU$1,318

Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Dimensions: 19.3×10.6×2.7 mm
Weight: 3.29 ct
(Size and weight are approximate)

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Boulder Opal Pendant Tooth Shaped Gem 82 ct

AU$1,305
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Multi Color Fire Australian Dark Opal 2.49 ct

AU$1,291

Opal: Natural, Solid, Untreated, Polished
Dimensions: 13.4×7.3×4 mm
Weight: 2.49 ct
Source: Lightning Ridge, NSW, Australia
(Size and weight are approximate)

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3.75ct Natural Dark Opal Rolling Mackerel Pattern

AU$1,277

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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Neon Bright Fire Australian Dark Opal 1.21 ct

AU$1,263

Opal: Natural, Solid, Untreated, Polished
Dimensions: 10×6.7×3.2 mm
Weight: 1.21 ct
Source: Lightning Ridge, NSW, Australia
(Size and weight are approximate)

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1.94ct Natural Dark Opal Lightning Ridge

AU$1,256

100% Natural Solid Dark Opal Polished Stone
Weight: 1.94 ct
Dimensions: 13.5x8x2 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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Sterling Silver Purple Boulder Opal Ring 33 ct US 9

AU$1,249

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 26×13.5×6 mm
Whole Ring Weight: 33 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US9 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

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4.05ct Natural Dark Opal -Teardrop Rainbow Fire

AU$1,242

Opal Details:

Type: Natural Solid Untreated Polished Dark Opal
Origin: Lightning Ridge Australia
Dimensions: 19.5×9.9×3.2mm (approx.)
Weight: 4.05ct (approx.)

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12.7ct Natural Boulder Opal Blue Green

AU$1,235

Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Dimensions: 25x13x5mm
Weight: 12.7 ct
Color: Blue, Green
Shape: Freeform (Half Moon)
Size and weight are approximate

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Opal Earrings 14k Yellow Gold Diamond

AU$1,224

Australian opal earrings set in 14K yellow gold feature natural diamond accents. Comes with a gift box and jewelry cleaning cloth.

Metal: Solid 14K Yellow Gold (Stamped)
Opal Type: Australian Opal Doublet
Gemstone: Natural Diamonds
Earring Size: 10.8 x 9.6 mm approx
Total Weight: 8.33 ct

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Opal Earrings 14k Yellow Gold Diamond

AU$1,224

Australian opal earrings set in 14K yellow gold feature natural diamond accents. Comes with a gift box and jewelry cleaning cloth.

Metal: Solid 14K Yellow Gold (Stamped)
Opal Type: Australian Opal Doublet
Gemstone: Natural Diamonds
Earring Size: 10.8 x 9.4 mm approx
Total Weight: 8.59 ct

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Sterling Silver Purple Boulder Opal Ring 30 ct US 8

AU$1,221

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 27x15x5.5 mm
Whole Ring Weight: 30 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US8 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

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1.23ct Natural Dark Opal Rainbow Rolling Ribbon Pattern

AU$1,221

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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77.7ctw Natural Koroit Boulder Opal Pair

AU$1,221

100% Natural, Untreated, Polished
Source: Koroit, QLD, Australia
Dimensions : 29×24.5×5.5 mm 26x23x7 mm
Total Weight: 77.7 ctw
(Size and weight are approximate)

This Opal is eligible to purchase on a Payment Plan

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3.64ct Natural Dark Opal -Teardrop Rainbow Fire

AU$1,200

Opal Details:

Type: Natural, Solid, Untreated Dark Opal
Origin: Lightning Ridge, Australia
Dimensions: 15.3×9.8×3.7mm (approx.)
Weight: 3.64ct (approx.)

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.