Explore opals by type
Black Opal
Boulder Opal
Pipe Opal
Crystal Opal
White Opal
Opal Jewelry
Explore opals by shape
Oval
Teardrop
Heart
Round
Square
Freeform
Filters
1.06 ct Dark Opal Heart
AU$450Natural Solid Untreated Australian Dark Opal / Semi Black Opal Polished Stone
Weight: 1.06 carats
Dimensions: 7x9x2 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Sterling Silver Australian Boulder Opal Ring 23 ct US 8
Original price was: AU$527.AU$448Current price is: AU$448.Ring Size: US8 (Size Change is not available)
Opal: Natural, Solid, Untreated, Polished
Setting Dimensions: 22×12.5×5.5 mm
Whole Ring Weight: 23 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Sterling Silver Freeform Boulder Opal Ring 22 ct US 8
Original price was: AU$527.AU$448Current price is: AU$448.Opal: Natural, Solid, Untreated, Polished
Setting Dimensions: 24.5x11x4 mm
Whole Ring Weight: 22.5 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US8 (Size Change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
1.34ct Crystal Opal Pair 2pcs Calibrated 10x7mm 8x5mm
AU$4431.34ct total natural Australian crystal opal pair from Coober Pedy featuring vivid green, blue, and golden fire. Freeform pear shapes, not calibrated, ideal for custom earrings, pendants, or bespoke fine jewelry. 100% natural solid opals and October birthstone gemstones.
Type: Natural Solid Crystal Opal Pair
Origin: Coober Pedy, South Australia
Total Weight: 1.34 carats (approx.)
Stone 1 Dimensions: 10 x 7 x 2.5 mm (approx.)
Stone 2 Dimensions: 8 x 5 x 1.5 mm (approx.)
Color: Vivid green, blue, yellow, and multicolor fire
Cut / Shape: Freeform pear cabochons (not calibrated)
Treatment: 100% natural and untreated (not doublet or triplet)
Use: Custom earrings, pendant pair, bespoke fine jewelry, collector stones
1.09ct Crystal Opal Pair 2pcs Calibrated 10x7mm 5x5mm
AU$443Opal: Natural, Solid, Untreated, Polished, Transparent, Calibrated
Source: Andamooka, Australia
Dimensions: Oval – 10x7x2 mm / Round – 5x5x2 mm
Total Weight: 1.09 ctw
(Size and weight are approximate)
Boulder Opal Pendant 32ct
Original price was: AU$520.AU$443Current price is: AU$443.32ct 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
Original price was: AU$513.AU$436Current price is: AU$436.Electric 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
Boulder Opal Pendant 111.9ct
Original price was: AU$513.AU$436Current price is: AU$436.111.9ct 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
Original price was: AU$513.AU$436Current price is: AU$436.Large 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.
Opal Doublet Set Freeform Multicolor Fire 2.41ct
AU$422Type: Australian opal doublet parcel
Origin: Australia
Weight: approximately 2.41 ct total
Dimensions: 15.1 x 7.9 mm and 8.9 x 5.3 mm
Colour: orange, yellow, green and blue play of colour
Shape: marquise polished cabochons
Treatment: opal doublet construction (genuine opal layer bonded to ironstone backing)
Opal Doublet Pair 4.59ct
AU$4224.59ctw Australian opal doublet freeform pair featuring vivid red, orange, yellow, green, and blue fire. Professionally polished matched cabochons, ideal for earrings, pendants, and fine jewelry designs.
Stone Type: Natural Australian Opal Doublet
Quantity: 2 stones (matched pair)
Total Weight: 4.59ctw approx
Dimensions: 15 x 7.3 x 2 mm approx
Color: Red, orange, yellow, green, blue
Shape: Freeform calibrated cabochon
Treatment: Opal doublet (natural crystal opal bonded to ironstone)
Suitable For: Earrings, rings, pendants, matched settings, fine jewelry
3.91ct Natural Boulder Opal Blue Fire
AU$422100% Natural Solid Boulder Opal Polished Stone
Weight: 3.91 ct
Dimensions: 16.5×6.5×3.5 mm
Source: Winton,QLD, Australia
Size and weight are approximate
4.53ct Natural Crystal Boulder Opal
AU$422Natural Solid Untreated Australian Pipe Crystal Boulder Opal Polished Stone
Weight: 4.53 carats
Dimensions: 17×7.5×4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
3.91ct Natural Crystal Boulder Opal
AU$422Natural Solid Untreated Australian Pipe Crystal Boulder Opal Polished Stone
Weight: 3.91 carats
Dimensions: 10.5x9x4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
3.5ct Natural Crystal Boulder Opal
AU$422Natural Solid Untreated Australian Crystal Boulder Opal Polished Stone
Total Weight: 3.5 carats
Dimensions: 17.5x9x4mm
Source: Winton, QLD, Australia
Item code : PP300
Size and weight are approximate
Large Wood Fossil Boulder Opal Pendant 50.5ct
Original price was: AU$492.AU$419Current price is: AU$419.50.5ct 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
Original price was: AU$492.AU$419Current price is: AU$419.64ct 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
Original price was: AU$492.AU$419Current price is: AU$419.Type: 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
3mm Round Calibrated Opal Doublet Parcel 3.05ct
AU$415Australian opal doublet parcel 25pcs calibrated 3mm round. Strong red dominant fire with flashes of orange, green, and blue across calibrated 3mm round opal doublets. Consistent sizing makes this parcel ideal for earrings, rings, and fine jewelry settings.
Stone Type: Australian Opal Doublet
Origin: Coober Pedy, Australia
Size: 3mm round calibrated
Total Weight: 3.05ctw approx
3mm Round Calibrated Opal Doublet Parcel 3.15ct
AU$415Australian opal doublet parcel 25pcs calibrated 3mm round. Bright red dominant fire with flashes of orange, green, and blue across matched 3mm round calibrated opal doublets. Ideal for earrings, rings, and micro pavé jewelry.
Stone Type: Australian Opal Doublet
Origin: Coober Pedy, Australia
Size: 3mm round calibrated
Total Weight: 3.15ctw approx
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.