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1.47ct Natural Dark Opal Multicolor Fire
AU$534100% Natural Solid Dark Opal Polished Stone
Weight: 1.47 ct
Dimensions: 11.5x7x3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
45.77ct Large Round Oval Koroit Boulder Opal
AU$534Opal Details:
Natural Solid UntreatedÂ
Weight: 45.77 ct approx
Dimensions: 30x27x5 mm approxÂ
Source: Koroit,QLD, Australia
28.81ct Natural Boulder Opal – Turquoise Blue Green
AU$534
 Opal Details:
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Type: Natural, Solid, Untreated, Polished Boulder Opal
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Origin: Winton, QLD, Australia
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Dimensions: 30 × 18 × 6 mm (approx.)
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Weight: 28.81 ct (approx.)
Boulder Opal Pendant 32ct
AU$52732ct Australian wood fossil boulder opal pendant featuring sparkling vivid green and blue fire within natural ironstone. Polished freeform cut with a brown adjustable necklace. Natural untreated opal, perfect for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural solid boulder opal pendant
Origin: Queensland, Australia
Weight: 32 carat
Dimensions: 43 x 16 x 5 mm approx.
Color: Sparkling green and blue fire in wood fossil ironstone
Cut: Polished freeform
Necklace: Brown adjustable cord necklace included
Treatment: 100% natural and untreated opal
Boulder Opal Ring 17ct Sterling Silver Blue Fire US7
AU$520Electric royal blue fire glows across natural ironstone in this Australian boulder opal ring. Polished teardrop bezel set in sterling silver, perfect as a bold statement and meaningful October birthstone jewelry.
Ring Size: US7 (size change not available)
Dimensions: 18.5 x 10.5 x 4.5 mm approx.
Weight: 17ct approx. (whole ring)
Origin: Queensland, Australia
Opal Type: Natural Solid Boulder Opal
Treatment: None (100% natural, not a doublet or triplet)
Metal: S925 sterling silver, rhodium plated
Ring Band: 3.5 mm
16.22ct Natural Boulder Opal Blue Green Fire
AU$520100% Natural Boulder Opal
Weight: 16.22 ct
Dimensions: 33x14x5 mm
Source: Winton, QLD, Australia
1.14ctw Natural Crystal Opal Pair Lightning Ridge
AU$520100% Natural Lightning Ridge Crystal Opal
Total Weight: 1.14 ctw
Dimensions: 10.2x5x1 mm, 10.8×6.5×1.8 mm
Source: Lightning Ridge, NSW, Australia
Boulder Opal Pendant 111.9ct
AU$520111.9ct Australian Boulder Opal pendant featuring vibrant blue and purple fire layered through natural ironstone. Polished freeform pendant on a dark brown adjustable necklace. Natural untreated opal ideal for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 111.9 ct
Dimensions: 45×26.5×8 mm
Color: Blue and purple fire with dark brown ironstone
Necklace: Dark brown adjustable cord
Treatment: 100% natural, untreated (not a doublet or triplet)
Boulder Opal Pendant 160ct
AU$520Large Australian boulder opal pendant featuring bold blue purple. Natural untreated opal on adjustable leather necklace, designed as statement October birthstone jewelry.
Dimensions: 78 × 24 × 12 mm approx.
Weight: 160 ct approx.
Origin: Winton, Queensland, Australia
Opal Type: Natural Solid Boulder Opal
Necklace: Adjustable black genuine leather cord
Additional custom lighting image requests are not available.
1.95ct Crystal Boulder Opal
AU$5131.95ct Australian crystal opal with smooth pastel purple body tone and elegant elongated cut. 100% natural and untreated gemstone perfect for fine jewelry, October birthstone designs, or collectors.
Type: Natural Solid Crystal Opal
Origin: Queensland, Australia
Dimensions: 17.3 × 6.7 × 3.0 mm (approx.)
Weight: 1.95 ct (approx.)
Color: Soft pastel purple tone (no fire)
Cut/Shape: Long triangle elongated cut
Treatment: 100% natural, untreated opal (not a doublet or triplet)
0.54ct Natural Black Opal Heart – Green & Violet Fire
AU$513Opal Details:
Type: Natural, Solid, Untreated Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 6.1x8x1.7mm (approx.)
Weight: 0.54ct (approx.)
Black Opal Blue Green Fire 1.51ct
AU$513Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 10.4 × 5.7 × 3.6 mm
Weight: 1.51ct
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
3.42ct Crystal Opal Parcel 6pcs Calibrated 10x7mm
AU$5133.42ctw natural Australian crystal opal parcel from Coober Pedy featuring six calibrated pear cabochons. Each stone shows bright pastel pink, green, and blue fire with translucent crystal body. Precision matched sizing makes this parcel ideal for earrings, pendants, and fine jewelry designs.
Type: Natural Solid Crystal Opal Parcel
Origin: Coober Pedy, South Australia, Australia
Quantity: 6 calibrated pieces
Total Weight: 3.42ct approx
Individual Size: 10 x 7 x 1.5 mm approx each
Shape: Pear cabochon
Color: Pastel pink, green, and blue fire
Body Type: Crystal opal translucent body
Treatment: 100% natural, untreated opals (not doublets or triplets)
Use: Earrings, pendants, fine jewelry design, gemstone collection
2Pcs Crystal Opal Pair 1.16ctw
AU$5131.16ct Australian crystal opal pair from Coober Pedy featuring brilliant red, green, blue, and orange fire within a translucent body tone. Naturally shaped polished pear cabochons, ideal for earrings, pendants, or custom fine jewelry. 100% natural and untreated October birthstone opals.
Type: Natural Solid Crystal Opal Pair
Origin: Coober Pedy, South Australia, Australia
Quantity: 2 pieces
Total Weight: 1.16 carats approx
Dimensions: L-10.5 × 6.2 × 1.8 mm, S-6 × 4 × 1.8 mm
Shape: Natural pear cabochons (not calibrated)
Color: Brilliant red, green, blue, and orange play of color
Body Tone: Translucent crystal
Cut: Polished, jewelry ready
Treatment: 100% natural untreated opal (not a doublet or triplet)
Use: Perfect for earrings, pendants, custom fine jewelry, or collectors
6.02ctw Natural Boulder Opal Set Blue Green
AU$506100% Natural Solid Boulder Opals
Total Weight: 6.02 btw
Size: Marquise – 24×5.5×3.8 mm
Oval – 9.5x5x3 mm
Source: Winton,Qld,Australia
1.08ct Crystal Opal Lightning Ridge
AU$506Natural Solid Untreated Crystal Opal Polished Stone
Weight: 1.08 ct
Dimensions: 10x6x2.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Opal Doublet 6.4ct Calibrated 15x10mm 9x7mm
AU$499Calibrated Australian opal doublet matching set totaling 6.4ctw, including one 15x10mm oval and two 9x7mm ovals. Displays vivid pink, orange, yellow, green, blue, and cyan fire. Ideal for coordinated earring and pendant jewelry designs.
Stone Type: Australian Opal Doublet
Quantity: 3 stones (matched set)
Total Weight: 6.4ctw approx
Dimensions:15 × 10 mm / 9 × 7 mm
Color: Pink, orange, yellow, green, blue, cyan
Shape: Oval calibrated cabochon
Treatment: Opal doublet (natural crystal opal bonded to ironstone)
Suitable For: Earrings, pendant center stone, matching jewelry sets, fine jewelry design
2.04ct Crystal Boulder Opal
AU$4992.04ct Australian crystal boulder opal showing bright flashes of orange, yellow, and green across its pastel translucent body. 100% natural and untreated gemstone ideal for fine jewelry or October birthstone collections.
Type: Natural Solid Crystal Boulder Opal (Pipe Opal)
Origin: Queensland, Australia
Dimensions: 15 × 7.2 × 3 mm (approx.)
Weight: 2.04 ct (approx.)
Color: Orange, yellow, green fire
Cut/Shape: Freeform teardrop cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
1.7ct Natural White Opal Heart Coober Pedy
AU$499Opal Details:
Type: Natural Solid Untreated White Opal
Origin: Coober Pedy Australia
Dimensions: 9.1×11.1×2.8mm approx
Weight: 1.7ct approx
1.36ct Natural Black Opal Blue Fire Teardrop
AU$499100% Natural Solid Black Opal Polished Stone
Weight: 1.39 ct
Dimensions: 9×7×3 mm
Source: Lightning Ridge, NSW, Australia
(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.