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
4.98 ct Dark Crystal Opal Lightning Ridge
AU$342Opal: 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
2.29ct Natural Dark Opal Blue Green Fire
AU$812100% Natural Solid Dark Opal Polished Stone
Weight: 2.29 ct
Dimensions: 11×8.5×4 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Partially Transparent
1.95ct Natural Faceted Crystal Opal – Oval Green Blue
AU$798Opal: Natural, Solid, Untreated, Faceted
Source: Andamooka, Australia
Dimensions: 11.7×8.1×4.8 mm
Weight: 1.95 ct
Color: Green, Blue
Shape: Oval
Size and Weight are approximate
2.01ct Natural Faceted Crystal Opal – Oval Blue Fire
AU$713Opal Details:
Type: Natural, Solid, Untreated, Faceted
Origin: Andamooka, Australia
Dimensions: 10.7 × 8.7 × 5.6 mm (approx.)
Weight: 2.01ct (approx.)
1.63ct Natural Faceted Crystal Opal – Cushion Cut
AU$841Opal Details:
Type: Natural, Solid, Untreated, Faceted Crystal Opal
Origin: Andamooka, Australia
Dimensions: 9 × 8 × 4.5 mm (approx.)
Weight: 1.63ct (approx.)
1.79ct Natural Faceted Crystal Opal – Oval
AU$641Â Opal Details:
Type: Natural, Solid, Untreated, Faceted Opal
Origin: Andamooka, Australia
Dimensions: 9.5 × 8 × 4.5 mm (approx.)
Weight: 1.79ct (approx.)
Black Opal 18K White Gold Pendant with Natural Diamonds
AU$42,750Opal: Natural, Solid, Untreated, Polished
Opal Weight: 6.1 ct (Stamped)
Opal Dimensions: 18.2×13.6×5 mm
Source: Lightning Ridge, NSW, Australia
Color: Blue, Green
Pattern: Blocky / Jigsaw
Total Weight of Necklace, Bail, Pendant and Opal: 18.3 gram / 91.5 carat
Natural Diamonds: 32 x Brilliand Cut Diamonds @ 1.95mm. 0.97 ctw (stamped) D/E VS
18k White Gold Necklace, Bail and Pendant (Stamped)
Necklace Length: Adjustable between 42cm and 46cm
Note – The primary image in this listing was taken with minimal light hence the difference in color appearance
4.72ct Natural Black Opal – Teardrop Deep Blue
AU$1,710Opal Details:
100% Natural Solid Black Opal Polished Stone
Weight: 4.72 ct
Dimensions: 14.5×10.5x5mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Note: Partially transparent
3.91ct Natural Faceted Crystal Opal
AU$1,418Opal Details:
Opal: Natural, Solid, Untreated, Faceted
Source: Andamooka, Australia
Dimensions: 11x11x6.2 mm
Weight: 3.91 ct
Size and Weight are approximate
1.59ct Natural Black Opal – Oval Neon Blue Fire
AU$1,938Opal Details:
Weight: 1.59 ct
Dimensions: 9×7.5×3 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
11.3 ct Half Moon Crystal Boulder Opal – Blue Green
AU$4,560Opal Details:
Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 11.3 carats
Dimensions: 20×13.5×7.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate
36.28ct Top Gem Crystal Boulder Opal Heart
Original price was: AU$12,925.AU$6,270Current price is: AU$6,270.Opal Details:
Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 36.28 carats
Dimensions: 22x25x11 mm
Source: Winton, QLD, Australia
Size and weight are approximate
5.6ctw Natural Dark Opal Parcel 6pcs
AU$1,405Opal: 100% Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Total Weight: 5.6 ctw
Largest Opal Size: 8.5x7x2.2 mmÂ
Smallest Opal Size: 7.5×5.5×2.5 mm
Color: Pink, Orange, Yellow, Green, Blue
(Size and Weight are approximate)
5ct Natural Boulder Opal Neon Blue Green Fire
AU$770Opal: Natural, Solid, Untreated, Polished
Dimensions: 19x11x3.5mm
Source: Winton, QLD, Australia
Weight: 5 ct
Color: Blue, Purple
Shape: Freeform
Size and weight are approximate
10.8ct Natural Boulder Opal Wood Fossil
AU$976Opal: Natural, Solid, Untreated, Polished
Color: Purple
Shape: Freeform
Weight: 10.8 ct
Dimensions: 33×9.5x4mm
Source: Winton, QLD, Australia
Size and weight are approximate
10ct Boulder Opal Red Blue Green Stripe Flash
AU$39910ct Australian boulder opal from Winton Queensland reveals striking red, blue, and green stripe flashes across its dark ironstone body. Expertly polished freeform cut, 100% natural and untreated. Ideal for fine jewelry, collector gemstone, or meaningful October birthstone gift.
Type: Natural Solid Boulder Opal
Origin: Winton, Queensland, Australia
Dimensions: 24 x 12.5 x 4 mm (approx.)
Weight: 10ct (approx.)
Color: Brilliant red, blue, and green stripe flash
Cut/Shape: Freeform polished cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
9.5ct Natural Boulder Opal Blue Green
AU$549Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Dimensions: 17x17x4mm
Weight: 9.5 ct
Color: Blue, Green
Shape: Freeform (Triangular)
(Size and weight are approximate)
7.6ct Natural Boulder Opal Blue Green
AU$677Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Dimensions: 24.5x10x4mm
Weight: 7.6 ct
Color: Blue, Purple
Shape: Freeform
Size and weight are approximate
12.7ct Natural Boulder Opal Blue Green
AU$1,268Opal: Natural, Solid, Untreated, Polished
Source: Winton, QLD, Australia
Dimensions: 25x13x5mm
Weight: 12.7 ct
Color: Blue, Green
Shape: Freeform (Half Moon)
Size and weight are approximate
7.7ct Natural Boulder Opal
AU$599Opal: Natural, Solid, Untreated, Polished
Color: Green, Blue, Pink
Shape: Freeform (Marquis)
Weight: 7.7 ct
Dimensions: 30x8x4.5mm
Source: Winton, QLD, 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.