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6.02ctw Natural Boulder Opal Set Blue Green
AU$493100% 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$493Natural Solid Untreated Crystal Opal Polished Stone
Weight: 1.08 ct
Dimensions: 10x6x2.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Australian Boulder Opal Freeform Winton 1.29ct
AU$486Genuine Australian boulder opal features multicolor fire. Ready to make into a custom ring or jewelry design.
Dimensions: 8.9 mm x 6.4 mm x 2.8 mm
Type: Solid Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 1.29ct
Treatment: 100% natural untreated opal (not a doublet or triplet)
Opal Doublet 6.4ct Calibrated 15x10mm 9x7mm
AU$486Calibrated 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$4862.04ct 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$486Opal 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$486100% 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)
2.06ct Natural Crystal Boulder Opal
AU$486100% Natural Solid Crystal Opal Polished Stone
Weight: 2.06 ct
Dimensions: 11×7.5×3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
24.8ct Solid Boulder Opal Electric Blue Purple Fire
AU$48624.80ct natural solid boulder opal from Winton, Australia, features bright electric blue and purple fire. Untreated and genuine, a perfect centerpiece for custom rings, pendants, or unique jewelry creations.
Large Wood Fossil Boulder Opal Pendant 50.5ct
AU$48650.5ct Australian Boulder Opal pendant featuring vivid blue and green fire within natural wood fossil ironstone. Polished hexagon shape with a brown adjustable necklace. Natural untreated solid opal ideal for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural solid Boulder Opal pendant
Origin: Winton Queensland Australia
Dimensions: 45×33.5×4.5 mm approx
Weight: 50.5 ct approx
Color: Blue green fire with wood fossil pattern
Cut/Shape: Polished hexagon freeform
Necklace: Brown adjustable cord necklace
Treatment: 100 percent natural untreated opal not a doublet or triplet
Wood Fossil Boulder Opal Pendant 64ct
AU$48664ct Australian wood fossil boulder opal pendant from Winton reveals vibrant green and blue fire across its polished freeform shape. Natural untreated solid opal with a brown adjustable necklace, ideal for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Dimensions: 45 x 18 x 7.5 mm
Weight: 64 ct
Color: Green blue fire
Cut/Shape: Polished freeform wood fossil
Necklace: Brown adjustable cord
Treatment: 100% natural untreated opal (not a doublet or triplet)
Large Koroit Boulder Opal Pendant 83ct
AU$486Type: Natural Solid Untreated Boulder Opal
Origin: Koroit, Queensland, Australia
Dimensions: 52x24x7 mm approx
Weight: 83ct approx
Color: Rich brown ironstone with intricate natural matrix pattern and subtle fire
Use: Unisex opal pendant statement jewelry gift ready opal necklace
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Silver Boulder Opal Pendant 29 ct
AU$486Opal Doublet Parcel Calibrated 8x5mm
AU$472Australian opal doublet parcel with calibrated 8x5mm teardrop stones showing electric green multicolor fire. Ideal for earrings, rings, pendants, and jewelry making.
Stone Type: Australian Opal Doublet
Size: 8 × 5 mm approx (calibrated)
Total Weight: 4.03 ctw approx
Origin: Coober Pedy, Australia
Suitable For: Earrings, rings, pendants, custom jewelry
Opal Doublet Parcel Calibrated 8x5mm
AU$472Australian opal doublet stones with bright multicolor fire in calibrated teardrop shapes, ideal for earrings, rings, pendants, and jewelry making.
Stone Type: Australian Opal Doublet
Size: 8 × 5 mm approx (calibrated)
Total Weight: 2.09 ctw approx
Origin: Coober Pedy, Australia
Suitable For: Earrings, rings, pendants, custom jewelry
Silver Boulder Opal Pendant Hand Carving 26.4 ct
AU$472Silver Boulder Opal Pendant Hand Carving 23.5 ct
AU$472Boulder Opal Pendant 75ct
AU$45875ct Solid Boulder Opal pendant from Winton Queensland Australia with purplish blue fire across natural brown matrix. 100% natural untreated ready to wear jewelry perfect for collectors and opal lovers.
92.35ct Natural Koroit Boulder Opal Large Teardrop
AU$458Type: Natural Solid Untreated Boulder Opal
Origin: Koroit, Queensland, Australia
Dimensions: 40 x 28 x 10 mm approx
Weight: 92.35ct approx
Color: Orange blue fire in natural boulder opal
Use: Ideal for custom opal ring, pendant, or fine jewelry
Silver Boulder Opal Pendant Hand Carved 22.4 ct
AU$458Natural 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.