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1.7ct Natural Crystal Boulder Opal
AU$138Natural Solid Untreated Australian Crystal Boulder Opal Polished Stone
Total Weight: 1.7 ct
Dimensions: 11×5.5×3 mm
Source: Winton, QLD, Australia
(Size and weight are approximate)
23ctw Natural Crystal Boulder Opal Parcel 6pcs
AU$136Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Quantity: 6 Pieces – the price is for all pieces.
Total Weight: 23 ctw
Oval Opal Dimensions:
Large : 21.5x19x5 mm
Small : 15x17x4 mm
Freeform Opal Dimensions:
Large: 20x7x5 mm
Small:15x8x4.5 mm
(Size and weight are approximate)
33.63ct Crystal Boulder Opal Parcel
AU$136Natural Solid Untreated Pipe Crystal Boulder Opal Polished Stones
Quantity: 6 Pieces – the price is for all pieces. We do not sell separately.
Total Weight: 33.63 ctw
Dimensions:
Large Oval Shape Opal : 21.5x19x5 mm
Small Oval Shape Opal : 15x17x4 mm
Color : Purple
Shape : Oval Square Freeform
Source: Winton, QLD, Australia
Size and weight are approximate
23.55ctw Natural Crystal Boulder Opal Parcel 6pcs
AU$127Natural Solid Untreated Pipe Crystal Boulder Opal Polished Stones
Quantity: 6 Pieces – the price is for all pieces. We do not sell separately.
Total Weight: 23 ctw
Dimensions:
Large Freeform Shape Opal : 20x7x5 mm
Small Freeform Shape Opal :15x8x4.5 mm
Color : Purple Blue Green
Shape : Oval Square Freeform
Source: Winton, QLD, Australia
Size and weight are approximate
Natural Boulder Opal Pendant – Blue Green
Original price was: AU$141.AU$119Current price is: AU$119.Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 18.5 carat
Dimensions: 24.5x16x6mm
Source: Winton, QLD, Australia
Size and weight are approximate
33ct Koroit Boulder Opal Pendant
Original price was: AU$139.AU$118Current price is: AU$118.33ct Koroit Boulder Opal pendant necklace from Koroit, Queensland Australia reveals earthy brown ironstone matrix. Expertly polished in an elongated marquise shape with a natural drilled hole, it’s ready to wear on an adjustable brown rope cord. 100% natural, untreated, and ideal for October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Koroit, Queensland, Australia
Dimensions: 35 × 16 × 6 mm (approx.)
Weight: 33 ct (approx.)
Color: Brown, gold, and violet through ironstone matrix
Cut/Shape: Marquise polished cabochon with drilled hole
Necklace: Adjustable brown rope cord, ready to wear
Treatment: 100% natural, untreated opal (not a doublet or triplet)
39.6ct Solid Boulder Opal Pendant Necklace
Original price was: AU$134.AU$114Current price is: AU$114.This 39.6ct solid Australian wood fossil boulder opal pendant from Winton Queensland shows vivid flashes of blue and green fire against a rich brown matrix. Formed naturally as opal replaced ancient fossilized wood this pendant is both a gemstone and a piece of history.
Boulder Opal Pendant 52ct
Original price was: AU$119.AU$101Current price is: AU$101.52ct Australian boulder opal pendant with blue green fire in polished ironstone. Solid natural untreated opal on adjustable black cord, ready to wear.
Dimensions: 32 × 21 × 7.5 mm approx
Weight: 52 ct approx
Origin: Winton, Queensland Australia
Opal Type: Natural Solid Boulder Opal
Shape: Freeform cabochon with drilled hole
Necklace: Adjustable black cord included
Treatment: 100% natural untreated opal
Koroit Boulder Opal Pendant 20ct
Original price was: AU$69.AU$59Current price is: AU$59.Australian boulder opal pendant featuring rich brown ironstone veins in a double sided polished finish. Natural solid untreated opal, drilled and ready to wear on an adjustable rope cord.
Dimensions: 19 × 18 × 5 mm approx
Weight: 20 ct approx
Origin: Koroit, Queensland Australia
Opal Type: Natural Solid Boulder Opal
Finish: Double sided polished freeform with drilled hole
Necklace: Adjustable cream rope cord
Treatment: 100% natural untreated opal
Lighting: Standard studio lighting. Custom lighting requests unavailable.
Opal Earrings Studs 14K Yellow Gold
Brilliant multicolor Fire Australian opal stud earrings set in solid 14K yellow gold.
Metal: Solid 14K Yellow Gold (Stamped)
Opal Type: Australian Opal Doublet
Opal Color: Orange, Yellow, Green Blue
Stone Size: 4 mm round approx
Total Weight: 3.29ct
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.