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Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9

AU$1,665

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 25×13.5×6 mm
Whole Ring Weight: 30 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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Green Oval Boulder Opal 32.8 ct

AU$1,665

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 32.8 carats
Dimensions: 33.5x15x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate

This Opal is eligible to purchase on a Payment Plan

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13.6ct Natural Boulder Opal Blue Green Fire

AU$1,665

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 13.6 carats
Dimensions: 26.5x12x7 mm
Source: Winton, QLD, Australia
Size and weight are approximate
This opal has undulation as can be seen in the photos and video

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2.54ct Natural Dark Opal Multicolor Fire

AU$1,665

Natural Solid Untreated Australian Opal Polished stone
Weight: 2.54 carats
Dimensions: 17x10x2 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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Black Opal Teardrop Neon Blue Cyan 3.47ct

AU$1,638

Electric neon blue and cyan fire flashes across this natural black opal in a polished teardrop cabochon. A striking Australian opal gemstone ideal for rings, pendants, and fine jewelry.

Type: Natural Solid Black Opal
Origin: Lightning Ridge, New South Wales, Australia
Weight: 3.47 ct
Dimensions: 15.7 x 9.5 x 3.7 mm
Color: neon blue cyan teal fire
Shape: teardrop polished cabochon
Transparency: partially transparent crystal structure
Treatment: 100% natural untreated opal

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6.17ct Natural Boulder Opal Multicolor Fire

AU$1,638

Opal: Natural, Solid, Untreated,Polished
Weight: 6.17 ct
Dimensions: 20x10x3.5 mm
Source: Winton, QLD, Australia
(Size and weight are approximate)

This Opal is eligible to purchase on a Payment Plan

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Dark Opal 5.43ct Red and Multicolor Fire

AU$1,617

Bright red multicolor fire Australian opal from Lightning Ridge. Ideal as a center stone for an opal ring, opal pendant, or fine opal jewelry, and a striking October birthstone gemstone.

Opal: Natural Dark Opal (Semi Black Opal)
Source: Lightning Ridge, Australia
Dimensions: 13.8 x 11.4 x 5.3 mm approx
Weight: 5.43ct approx

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2.74ct Natural Dark Opal Rolling Rainbow Fire

AU$1,617

Bright Rolling Rainbow Fire
100% Natural Solid Dark Opal
Weight: 2.74 ct
Dimensions: 13.5x10x3 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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5.26ct Natural Black Opal Heart Deep Blue Green Fire

AU$1,596

5.26ct Solid Black Opal Heart from Lightning Ridge Australia with vivid blue and green fire. 100% natural untreated gemstone, ideal for collectors and fine jewelry design.

Type: Natural Solid Black Opal Heart

Origin: Lightning Ridge, Australia

Dimensions: 13.5 × 16.7 × 4 mm approx

Weight: 5.26ct approx

Color: Vivid blue and green fire on dark body tone

Cut/Shape: Heart cabochon polished

Treatment: 100% natural untreated solid opal

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Australian Boulder Opal Neon Fire 3.1ct

AU$1,527

Genuine Australian boulder opal features neon red and multicolor fire. Ready to make into a custom ring or jewelry design.
Dimensions: 15.3 mm x 7.8 mm x 3.2 mm
Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 3.1ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

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2.7ct Black Opal Green Blue Fire

AU$1,527

2.7ct Australian black opal from Lightning Ridge featuring vivid green and blue rolling fire across a dark body tone. Freeform polished cabochon, 100% natural and untreated. Ideal for fine jewelry, statement rings, pendants, and a striking October birthstone gemstone.

Opal Type: Natural Solid Black Opal
Origin: Lightning Ridge, New South Wales, Australia
Weight: 2.7 carats
Dimensions: 15 × 11.3 × 3 mm approx
Shape: Freeform cabochon
Color: Bright green and blue rolling fire
Treatment: 100% natural and untreated, not a doublet or triplet
Use: Ring stone, pendant stone, fine jewelry, collector gemstone

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14.75ct Solid Boulder Opal Heart – Pastel Pink and Blue Fire

AU$1,527

Opal Details:

Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 17.5×20.8×5mm (approx.)
Weight: 14.75ct (approx.)

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14.9ct Natural Australian Boulder Opal Heart

AU$1,527

Opal Details:

Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 16.8×20.4×5mm (approx.)
Weight: 14.9ct (approx.)

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Large Boulder Opal Pendant 284 ct

AU$1,527

This 284ct Australian Boulder Opal pendant showcases brilliant blue, cyan, green, and purple fire across natural ironstone. Polished into a large statement form and finished with a brown adjustable cord necklace, this natural untreated opal is ideal for collectors, daily wear, and meaningful October birthstone jewelry.

Type: Natural solid boulder opal pendant necklace

Origin: Winton Queensland Australia

Dimensions: 82 x 31 x 11 mm approx

Weight: 284ct approx

Color: flashes of blue cyan green and purple fire with ironstone

Cut and Shape: polished statement freeform drilled

Necklace: brown adjustable cord necklace

Treatment: 100 percent natural untreated opal not a doublet or triplet

 

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2.68ct Natural Crystal Opal Lightning Ridge

AU$1,520

Natural Solid Untreated Lightning Ridge Crystal Opal Polished Stone
Weight: 2.68 carats
Dimensions: 11×8.5×4 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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Boulder Opal Multicolor Fire 2.1ct

AU$1,457

Genuine Australian boulder opal features a rare vivid pinkish orange yellow fire. Cut with a highly polished smooth surface, this premium 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: 11.4 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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Opal Earrings 14k Yellow Gold Hook style

AU$1,453

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

Metal: Solid 14K Yellow Gold (Stamped)
Opal Type: Australian Opal Doublet
Earring Size: 26 x 8.3 mm approx
Total Weight: 10.25 ct

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3.2ct Natural Black Opal Heart Neon Blue Green Fire

AU$1,416

Type: Natural Solid Untreated Black Opal
Origin: Lightning Ridge Australia
Dimensions: 12.3 × 9.4 × 4.2 mm approx
Weight: 3.2ct approx

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Australian Boulder Opal Shooting Star Fire 2.54ct

AU$1,388

Genuine Australian boulder opal features Neon Metallic Red, Orange, Green fire. Ready to make into a custom ring or jewelry design.
Dimensions: 11.2 mm x 9.5 mm x 3.4 mm
Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 2.54ct
Treatment: 100% natural untreated opal (not a doublet or triplet)

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Sterling Silver Boulder Opal Ring US 9

AU$1,388

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 19×13.5×5.5 mm
Whole Ring Weight: 27.5 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

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.