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Sterling Silver Green Blue Boulder Opal Ring 28.5 ct US 10
AU$1,421Opal: 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
3.91ct Natural Faceted Crystal Opal
AU$1,414Opal Details:
Opal: Natural, Solid, Untreated, Faceted
Source: Andamooka, Australia
Dimensions: 11x11x6.2 mm
Weight: 3.91 ct
Size and Weight are approximate
5.6ctw Natural Dark Opal Parcel 6pcs
AU$1,401Opal: 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)
1.52ct Natural Black Opal – Oval Green Blue
AU$1,371
Opal Details:
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Type: 100% Natural, Solid, Untreated, Polished Black Opal
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Origin: Lightning Ridge, NSW, Australia
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Dimensions: 9.5 × 7.5 × 3.2 mm (approx.)
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Weight: 1.52ct (approx.)
54.2ct Natural Boulder Opal Large
AU$1,364Natural Solid Untreated Boulder Opal Polished Stone
Weight: 54.2 ct
Dimensions: 43.5x21x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate
4.45ct Crystal Boulder Opal
AU$1,3504.45ct 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)
3.29ct Natural Dark Opal Freeform Neon Rainbow Fire
AU$1,350Opal: 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)
41ct Natural Koroit Boulder Opal
AU$1,329100% Natural, Untreated, Polished
Dimensions : 41.5×20.5×6 mm
Weight: 41 ct
Source: Koroit, QLD, Australia
(Size and weight are approximate)
Multi Color Fire Australian Dark Opal 2.49 ct
AU$1,322Opal: 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)
3.75ct Natural Dark Opal Rolling Mackerel Pattern
AU$1,307100% Natural Dark Opal Polished Stone
Weight: 3.75 ct
Dimensions: 18x8x4.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Neon Bright Fire Australian Dark Opal 1.21 ct
AU$1,293Opal: 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)
1.94ct Natural Dark Opal Lightning Ridge
AU$1,286100% Natural Solid Dark Opal Polished Stone
Weight: 1.94 ct
Dimensions: 13.5x8x2 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Sterling Silver Purple Boulder Opal Ring 33 ct US 9
AU$1,279Opal: 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
Dark Opal Oval Red Green Blue Fire 1.49ct
AU$1,272Type: Natural Solid Dark Opal
Origin: Lightning Ridge, New South Wales Australia
Weight: 1.49 ct
Dimensions: 9.8 x 7.6 x 3.1 mm approx
Color: Red green blue fire
Shape: Oval polished cabochon
Treatment: 100% natural untreated opal
4.05ct Natural Dark Opal -Teardrop Rainbow Fire
AU$1,272Opal Details:
Type: Natural Solid Untreated Polished Dark Opal
Origin: Lightning Ridge Australia
Dimensions: 19.5×9.9×3.2mm (approx.)
Weight: 4.05ct (approx.)
12.7ct Natural Boulder Opal Blue Green
AU$1,265Opal: 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
Sterling Silver Purple Boulder Opal Ring 30 ct US 8
AU$1,251Opal: 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
1.23ct Natural Dark Opal Rainbow Rolling Ribbon Pattern
AU$1,251100% 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)
77.7ctw Natural Koroit Boulder Opal Pair
AU$1,251100% 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)
3.64ct Natural Dark Opal -Teardrop Rainbow Fire
AU$1,229Opal 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.