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Wood Fossil Boulder Opal Pendant 25ct
AU$249This 25ct Australian boulder opal pendant from Winton shows vivid blue purple and green fire within its polished ironstone body. The rounded teardrop cut and brown adjustable cord create a natural and wearable design. 100% untreated, perfect for daily wear, gifting and October birthstone jewelry.
Type: Natural solid boulder opal pendant
Origin: Winton, Queensland, Australia
Dimensions: 25 x 18 x 5 mm
Weight: 25 ct
Color: Blue, purple and green fire with ironstone matrix
Cut/Shape: Rounded teardrop cut, drilled
Necklace: Brown adjustable cord
Treatment: 100% natural untreated opal (not a doublet or triplet)
Wood Fossil Boulder Opal Pendant 25ct
AU$27825ct Australian wood fossil boulder opal pendant featuring vivid green and blue fire running through natural ironstone. Polished cabochon with organic shape, supplied with a brown adjustable cord. 100% natural and untreated, ideal for October birthstone jewelry and everyday wear.
Opal Type: Natural solid wood fossil boulder opal
Origin: Australia
Weight: 25 carats
Dimensions: 29 × 17 × 6 mm
Color: Vivid green and blue fire with ironstone matrix
Cut / Shape: Polished cabochon pendant
Necklace: Brown adjustable braided cord
Treatment: 100% natural and untreated
Use: Pendant jewelry, October birthstone, gift or daily wear
Wood Fossil Boulder Opal Pendant 38ct
AU$64138ct Australian Boulder Opal pendant from Winton features vivid flashes of orange, yellow, green, and blue fire in a rounded teardrop cut. Polished and naturally drilled, it is ready to wear on a brown adjustable cord necklace. 100% natural and untreated, perfect October birthstone jewelry.
Opal Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 38 ct
Dimensions: 39 x 18 x 5 mm approx.
Cut Shape: Rounded teardrop, polished cabochon
Color: Sparkling orange, yellow, green, and blue fire
Pattern: Wood fossil boulder matrix with vivid play of color
Necklace: Brown adjustable cord necklace, ready to wear
Treatment: 100% natural untreated opal, not a doublet or tripletÂ
Wood Fossil Boulder Opal Pendant 16 ct
AU$32816ct Australian wood fossil boulder opal pendant featuring vivid blue and green fire flowing through natural ironstone. Polished elongated cabochon with a drilled hole, paired with a beige adjustable cord. 100% natural and untreated, ideal for October birthstone jewelry and everyday wear.
Opal Type: Natural Solid Wood Fossil Boulder Opal
Origin: Australia
Weight: 16 carats
Dimensions: 27 x 12 x 6 mm (approx.)
Color: Vivid blue and green fire with natural brown ironstone
Pattern: Wood fossil structure with flowing opal seam
Cut / Shape: Elongated cabochon, polished
Pendant Style: Drilled hole, ready to wear
Necklace: Beige adjustable cord necklace
Treatment: 100% natural, untreated opal (not a doublet or triplet)
Boulder Opal Pendant 17ct
AU$33517ct Australian wood fossil boulder opal pendant necklace featuring vivid turquoise, green, and blue fire. Smooth polished surface with organic ironstone pattern, set on a beige color adjustable cord. 100% natural and untreated opal, perfect for October birthstone jewelry and everyday wear.
Type: Natural solid wood fossil boulder opal pendant
Origin: Australia
Weight: 17 ct
Dimensions: 27 x 11 x 5 mm
Color: Vivid turquoise, green, and blue fire
Pattern: Wood fossil ironstone matrix
Cut Shape: Polished elongated cabochon
Necklace: Beige adjustable cord necklace
Treatment: 100% natural untreated opal, not a doublet or triplet
Wood Fossil Boulder Opal Pendant 16ct
AU$46316ct Australian wood fossil boulder opal pendant from Winton, Queensland featuring vivid pinkish red and green glittery fire. Polished drilled cabochon set on a beige adjustable necklace. 100% natural and untreated opal, ready to wear and perfect for October birthstone jewelry.
Type: Natural solid wood fossil boulder opal pendant
Origin: Winton, Queensland, Australia
Weight: 16 ct
Size: 25 x 14 x 5 mm
Color: Pinkish red fire with green flashes
Cut: Polished drilled cabochon
Necklace: Beige adjustable cord
Treatment: 100% natural and untreated
Wood Fossil Boulder Opal Pendant 23ct
AU$39223ct Australian wood fossil boulder opal pendant necklace featuring vivid green, yellow, and blue fire within natural fossilized ironstone matrix. Polished elongated cabochon with a natural drilled hole, ready to wear on a beige adjustable cord necklace. 100% natural and untreated October birthstone jewelry.
Stone Type: Natural Solid Wood Fossil Boulder Opal
Style: Pendant Necklace
Weight: 23 carat
Dimensions: 35 x 11 x 5 mm (approx.)
Origin: Winton, Queensland, Australia
Matrix: Fossilized wood ironstone
Fire Color: Green, yellow, and blue fire
Cut Shape: Polished elongated cabochon (not freeform)
Necklace: Beige adjustable cord necklace, ready to wear
Treatment: 100% natural, untreated opal (not a doublet or triplet)
Wood Fossil Boulder Opal Pendant 77ct
AU$46377ct Australian wood fossil boulder opal pendant from Winton, Queensland. This freeform polished cabochon features glittery green, yellow, and orange fire across rich brown ironstone. Drilled and ready to wear on a dark brown adjustable cord. Natural, untreated October birthstone jewelry.
Type: Natural Solid Wood Fossil Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 77ct
Dimensions: 43 × 29 × 8 mm
Colors: Glittery green, yellow, orange fire
Body tone: Brown ironstone wood fossil
Cut / Shape: Freeform polished cabochon
Necklace: Dark brown adjustable cord
Treatment: 100% natural, untreated (not doublet or triplet)
Wood Fossil Boulder Opal Pendant 34ct
AU$45634ct Australian wood fossil boulder opal pendant from Winton Queensland featuring vivid lime green and deep blue fire across its polished oval cabochon surface. Finished with a natural drilled hole and adjustable beige cord necklace. 100% natural and untreated, ideal for October birthstone jewelry.
Type: Natural solid boulder opal pendant
Material: Wood fossil boulder opal
Origin: Winton, Queensland, Australia
Weight: 34 carats
Dimensions: 30 x 19 x 5 mm approx
Color: Lime green and deep blue fire with polished brown ironstone
Cut / Shape: Oval cabochon
Necklace: Adjustable beige braided cord
Treatment: 100% natural untreated opal not a doublet or triplet
1.37ct Natural Crystal Boulder Opal
AU$713100% Natural Solid Crystal Opal Polished Stone
Weight: 1.37 ct
Dimensions: 11x6x3.2 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
Wood Fossil Boulder Opal Pendant 98ct
AU$42098ct Australian boulder opal pendant necklace from Winton, Queensland featuring natural blue and purple tones within rich fossilised ironstone. Polished large oval cabochon with a natural drilled hole, finished with a dark brown adjustable cord necklace. 100% natural and untreated October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 98 ct
Dimensions: 41 × 31 × 7 mm
Color: Natural blue and purple tones in fossilised ironstone
Cut Shape: Large oval cabochon
Necklace: Dark brown adjustable cord necklace
Treatment: 100% natural, untreated opal (not a doublet or triplet)
Boulder Opal Pendant 26ct
AU$420Type: Natural solid boulder opal pendant necklace
Origin: Winton Queensland Australia
Dimensions: 29 x 13 x 6 mm approx
Weight: 26ct approx
Color: flashes of pink green blue and orange fire with ironstone
Cut and Shape: polished long oval drilled
Necklace: brown adjustable cord necklace
Treatment: 100 percent natural untreated opal not a doublet or triplet
Boulder Opal Pendant 21ct Double Sided
AU$314Blue green 21ct Australian boulder opal pendant. Double sided polished, drilled and ready to wear on adjustable rope cord necklace.
Type: Natural Solid Boulder Opal Pendant
Origin: Queensland, Australia
Dimensions: 28 × 14 × 5 mm (approx.)
Weight: 21 ct (approx.)
Color: Blue and green fire through brown ironstone
Cut/Shape: Freeform double sided polished cabochon with drilled hole
Necklace: Adjustable cream rope cord, ready to wear
Treatment: 100% natural, untreated opal (not a doublet or triplet)
1.64ct Natural Crystal Boulder Opal
AU$713100% Natural Solid Crystal Opal Polished Stone
Weight: 1.64 ct
Dimensions: 15×5.2×3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
1.75ct Natural Crystal Boulder Opal
AU$599100% Natural Solid Crystal Opal Polished Stone
Weight: 1.75 ct
Dimensions: 10.5x7x3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
2.06ct Natural Crystal Boulder Opal
AU$499100% 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
4.26ct Natural Crystal Opal Lightning Ridge
AU$884100% Natural Solid Crystal Opal Polished Stone
Weight: 4.26 ct
Dimensions: 12x11x5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
0.77ct Natural Dark Opal Multicolor fire
AU$677100% Natural Solid Dark Opal Polished Stone
Weight: 0.77 ct
Dimensions: 9.5x6x2 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
1.67ct Natural Dark Opal Heart
AU$1,083💎 Opal Details:
- Type: Natural, Solid, Untreated, Polished Dark Opal
- Origin: Grawin, Lightning Ridge, NSW, Australia
- Dimensions: 8.5 × 8 × 3.5 mm (approx.)
- Weight: 1.67ct (approx.)
1.86ct Natural Dark Opal Lightning Ridge
AU$1,140100% Natural Solid Dark Opal Polished Stone
Weight: 1.86 ct
Dimensions: 14x8x2.2 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.