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3.05ct Natural Black Opal Green Blue
AU$1,7053.05ct Lightning Ridge black opal loose stone with vivid blue and green fire. Natural solid cabochon ready to set into jewelry or add to a collection.
Opal: Natural Solid Untreated Black Opal
Origin: Lightning Ridge Australia
Dimensions: 12.7×8.7×4.2 mm approx
Weight: 3.05 ct approx
Color: Vivid blue and green fire on dark body tone
Cut Shape: Polished cabochon
Treatment: 100% natural untreated opal not a doublet or triplet
Sterling Silver Ocean Beach Blue Boulder Opal Ring 24 ct US 7 3/4
AU$1,705Opal: 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
Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9
AU$1,705Opal: 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
Green Oval Boulder Opal 32.8 ct
AU$1,705Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 32.8 carats
Dimensions: 33.5x15x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate
13.6ct Natural Boulder Opal Blue Green Fire
AU$1,705Natural 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
2.54ct Natural Dark Opal Multicolor Fire
AU$1,705Natural Solid Untreated Australian Opal Polished stone
Weight: 2.54 carats
Dimensions: 17x10x2 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Black Opal Teardrop Neon Blue Cyan 3.47ct
AU$1,677Electric 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
6.17ct Natural Boulder Opal Multicolor Fire
AU$1,677Opal: Natural, Solid, Untreated,Polished
Weight: 6.17 ct
Dimensions: 20x10x3.5 mm
Source: Winton, QLD, Australia
(Size and weight are approximate)
Dark Opal 5.43ct Red and Multicolor Fire
AU$1,656Bright 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
2.74ct Natural Dark Opal Rolling Rainbow Fire
AU$1,656Bright 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
5.26ct Natural Black Opal Heart Deep Blue Green Fire
AU$1,6345.26ct 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
4.82ct Natural Crystal Opal Lightning Ridge
AU$1,634100% Natural Solid Polished
Weight: 4.82 ct
Dimensions: 18×12.5×3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
29.45ct Natural Boulder Opal Large
AU$1,585100% Natural Boulder Opal
Weight: 29.45 ct
Dimensions: 34×16.5×6 mm
Source: Winton, QLD, Australia
2.7ct Black Opal Green Blue Fire
AU$1,5632.7ct 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
14.75ct Solid Boulder Opal Heart – Pastel Pink and Blue Fire
AU$1,563Opal Details:
Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 17.5×20.8×5mm (approx.)
Weight: 14.75ct (approx.)
14.9ct Natural Australian Boulder Opal Heart
AU$1,563Opal Details:
Type: Natural, Solid, Untreated Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 16.8×20.4×5mm (approx.)
Weight: 14.9ct (approx.)
Large Boulder Opal Pendant 284 ct
AU$1,563This 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
2.68ct Natural Crystal Opal Lightning Ridge
AU$1,556Natural 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
3.2ct Natural Black Opal Heart Neon Blue Green Fire
AU$1,450Type: Natural Solid Untreated Black Opal
Origin: Lightning Ridge Australia
Dimensions: 12.3 × 9.4 × 4.2 mm approx
Weight: 3.2ct approx
Sterling Silver Boulder Opal Ring US 9
AU$1,421Opal: 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.