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6.17ct Natural Boulder Opal Multicolor Fire

AU$1,685

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$1,664

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$1,664

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$1,642

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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29.45ct Natural Boulder Opal Large

AU$1,592

100% Natural Boulder Opal
Weight: 29.45 ct
Dimensions: 34×16.5×6 mm
Source: Winton, QLD, Australia

This Opal is eligible to purchase on a Payment Plan

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Sterling Silver Ocean Blue Boulder Opal Ring 28.5 ct US 8 primary display view Australian opal ring sterling silver Opal Galaxy product image
-15%
Sterling Silver Ocean Blue Boulder Opal Ring 28.5 ct US 8 in hand view Australian opal ring sterling silver Opal Galaxy product image

Sterling Silver Ocean Blue Boulder Opal Ring 28.5 ct US 8

Original price was: AU$1,857.Current price is: AU$1,578.

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 26.5x10x6 mm
Whole Ring Weight: 28.5 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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2.7ct Black Opal Green Blue Fire

AU$1,571

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$1,571

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$1,571

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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2.68ct Natural Crystal Opal Lightning Ridge

AU$1,564

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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3.2ct Natural Black Opal Heart Neon Blue Green Fire

AU$1,457

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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Sterling Silver Ocean Beach Blue Boulder Opal Ring 24 ct US 7 3/4 primary display view Australian opal ring sterling silver Opal Galaxy product image
-15%
Sterling Silver Ocean Beach Blue Boulder Opal Ring 24 ct US 7 3/4 in hand view Australian opal ring sterling silver Opal Galaxy product image

Sterling Silver Ocean Beach Blue Boulder Opal Ring 24 ct US 7 3/4

Original price was: AU$1,714.Current price is: AU$1,457.

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 17.5×15.5×5 mm
Whole Ring Weight: 24 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US7 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

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Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9 primary display view Australian opal ring sterling silver Opal Galaxy product image
-15%
Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9 in hand view Australian opal ring sterling silver Opal Galaxy product image

Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9

Original price was: AU$1,714.Current price is: AU$1,457.

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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3.91ct Natural Faceted Crystal Opal

AU$1,421

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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5.6ctw Natural Dark Opal Parcel 6pcs

AU$1,408

Opal: 100% Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Total Weight: 5.6 ctw
Largest Opal Size: 8.5x7x2.2 mm 
Smallest Opal Size: 7.5×5.5×2.5 mm

Color: Pink, Orange, Yellow, Green, Blue
(Size and Weight are approximate)

This Opal is eligible to purchase on a Payment Plan

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1.52ct Natural Black Opal – Oval Green Blue

AU$1,378


 Opal Details:

  • Type: 100% Natural, Solid, Untreated, Polished Black Opal

  • Origin: Lightning Ridge, NSW, Australia

  • Dimensions: 9.5 × 7.5 × 3.2 mm (approx.)

  • Weight: 1.52ct (approx.)

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54.2ct Natural Boulder Opal Large

AU$1,371

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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4.45ct Crystal Boulder Opal

AU$1,357

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$1,357

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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41ct Natural Koroit Boulder Opal

AU$1,335

100% Natural, Untreated, Polished
Dimensions : 41.5×20.5×6 mm
Weight: 41 ct
Source: Koroit, QLD, Australia
(Size and weight are approximate)

This Opal is eligible to purchase on a Payment Plan

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.