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Polished Green Blue Boulder Opal 2.73 ct
AU$337💎 Opal Details:
Weight: 1.18 ct
Dimensions: 10×5.5×2.2 mm
Origin: Winton, Queensland, Australia
Size and weight are approximate
2.18 ct Natural Boulder Opal
AU$337Weight: 2.18 ct
Dimensions: 13 x 6 x 2.7 mm
Origin: Winton, Queensland, Australia
Size and weight are approximate
4.98 ct Dark Crystal Opal Lightning Ridge
AU$337Opal: Natural, Solid, Untreated, Polished, Transparent
Source: Lightning Ridge, NSW, Australia
Dimensions: 17.5x11x3.8 mm
Weight: 4.98 ct
(Size and weight are approximate)
Color: Cyan, Green, Blue
Black Opal Gemstone Green Yellow Fire 1.79ct
AU$330Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 10.2 × 7.7 × 3.5 mm (approx.)
Weight: 1.79ct (approx.)
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
Green Flash Natural Boulder Opal 2.38 ct
AU$330💎 Opal Details:
Weight: 2.38 ct
Dimensions: 14×6.7×2.7 mm
Origin: Winton, Queensland, Australia
Size and weight are approximate
Blue Green Solid Boulder Opal 1.05 ct
AU$330💎 Opal Details:
Weight: 1.05 ct
Dimensions: 12×4.8×2 mm
Origin: Winton, Queensland, Australia
Size and weight are approximate
Natural Australian Solid Boulder Opal 1.83 ct
AU$330💎 Opal Details:
Weight: 1.83 ct
Dimensions: 11.5×5.2×2.8 mm
Origin: Winton, Queensland, Australia
Size and weight are approximate
22.44ct Solid Boulder Opal Purple Blue
AU$33022.44ct natural boulder opal from Winton Queensland Australia displays vibrant blue purple gradient fire with distinctive ironstone matrix. 100% natural, untreated loose opal gemstone ideal for custom opal jewelry and collectors.
0.93ct Natural Crystal Opal Lightning ridge
AU$330100% Natural Lightning Ridge Crystal Opal
Weight: 0.93 ct
Dimensions: 8x7x2 mm
Source: Lightning Ridge, NSW, Australia
0.83ct NaturalCrystal Opal Lightning Ridge
AU$330100% Natural Lightning Ridge Crystal Opal
Weight: 0.83 ct
Dimensions: 9.5×6.5×1.5 mm
Source: Lightning Ridge, NSW, Australia
0.8ct Crystal Opal Oval Multi Color Fire
AU$330💎 Opal Details:
- Type: Natural Solid Crystal Opal
- Origin: Lightning Ridge, NSW, Australia
- Dimensions: 8.5 x 7 x 2 mm
- Weight: 0.8ct
Size and weight are approximate
0.85ct Natural Black Crystal Opal Oval Lightning Ridge
AU$330💎 Opal Details:
Type: Natural Solid Untreated
Origin: Lightning Ridge, Australia
Dimensions: 8.5 × 7.5 × 2 mm approx
Weight: 0.85ct approx
Wood Fossil Boulder Opal Pendant 23ct
Original price was: AU$387.AU$329Current price is: AU$329.23ct 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)
Boulder Opal Pendant Necklace 56.4 ct
Original price was: AU$387.AU$329Current price is: AU$329.Type: Natural solid boulder opal pendant necklace
Origin: Winton Queensland Australia
Dimensions: 35.4 x 23.6 x 6.4 mm
Weight: 56.4ct approx
Color: flashes of blue and cyan fire with ironstone
Cut and Shape: polished freeform drilled
Necklace: adjustable brown cord
Treatment: 100 percent natural untreated opal not a doublet or triplet
Boulder Opal Pendant 137ct
Original price was: AU$387.AU$329Current price is: AU$329.This 137ct natural solid boulder opal pendant features a bold Tribal Leaf carving across polished brown ironstone with glowing opal veins. Handcrafted in Winton Australia, it is designed as men’s opal jewelry and a unisex opal pendant, ready to wear on an adjustable leather cord.
Type: Natural Solid Boulder Opal Pendant
Origin: Queensland, Australia
Weight: 137ct approx.
Dimensions: 62 × 20 × 9 mm approx.
Color: Blue veins with brown ironstone body
Cut/Shape: Rectangular freeform, hand carved tribal leaf design
Necklace: Genuine Greek leather adjustable necklace, ready to wear
Treatment: 100% natural, untreated opal (not a doublet or triplet)
1.53ct Crystal Opal Green Blue Fire
AU$3231.53ct Australian crystal opal displays vibrant green and blue fire across its polished oval cabochon. With its natural body tone and flashes, it is ideal for fine jewelry design including rings and pendants. A beautiful October birthstone gemstone for unique custom pieces.
Type: Natural solid crystal opal (Pipe Opal)
Origin: Queensland, Australia
Dimensions: 13.5 x 6 x 3 mm
Weight: 1.53ct
Color: Vibrant green blue fire with pastel tones
Cut/Shape: Oval cabochon
Treatment: 100 percent natural untreated opal, not a doublet or triplet
Wood Fossil Boulder Opal Pendant 58ct
Original price was: AU$380.AU$323Current price is: AU$323.58ct Australian wood fossil boulder opal pendant featuring vivid green blue and soft pink fire within natural ironstone and fossil patterns. Polished freeform cabochon with drilled hole, paired with a brown adjustable cord necklace. 100% natural and untreated October birthstone opal.
Type: Natural Solid Boulder Opal Pendant
Material: Wood Fossil Boulder Opal
Origin: Queensland, Australia
Weight: 58 ct
Dimensions: 46 x 19 x 7 mm approx.
Color: Green blue pink fire with fossil wood pattern
Cut Shape: Freeform polished cabochon
Hole: Naturally drilled
Necklace: Brown adjustable cord necklace included
Treatment: 100% natural untreated opal not a doublet or triplet
Boulder Opal Pendant 16.6ct
Original price was: AU$380.AU$323Current price is: AU$323.Type: Natural Solid Untreated Boulder Opal
Origin: Queensland, Australia
Dimensions: 25.5 × 12 × 5 mm approx
Weight: 16.6ct approx
Color: White base with bright green, pink, and blue fire
Shape: Polished pendant with adjustable black cord
4.68ct Natural Crystal Boulder Opal
AU$323Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Dimensions: 17x17x5 mm
Weight: 4.68 ct
Color: Purple, Yellow
Shape: Rectangle
Size and weight are approximate
Large Boulder Opal Pendant 187ct
Original price was: AU$380.AU$323Current price is: AU$323.187ct Australian Boulder Opal pendant featuring vivid blue and green fire flowing through natural ironstone patterns. Expertly polished with a bold geometric shape and set on a genuine Greek leather adjustable necklace. A natural untreated opal ideal for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Dimensions: 68x35x11 mm (approx.)
Weight: 187 ct (approx.)
Color: Blue and green fire with rich brown ironstone
Cut/Shape: Large geometric freeform polished pendant
Necklace: Genuine Greek leather adjustable necklace
Treatment: 100% natural untreated opal (not a doublet or triplet)
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.