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Sterling Silver Solid Teardrop Boulder Opal Ring 24 ct US 7
AU$627Opal: Natural, Solid, Untreated, Polished
Setting Dimensions: 20x15x5 mm
Whole Ring Weight: 24 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US7 (Size Change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Sterling Silver Australian Boulder Opal Ring US 8
AU$463Opal: Natural, Solid, Untreated, Polished
Setting Dimensions: 21x12x6 mm
Whole Ring Weight: 24 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
Silver Solid Boulder Opal Pendant Necklace 27 ct
AU$1,11227ct solid boulder opal silver pendant from Queensland Australia with vivid blue violet fire. Natural untreated October birthstone jewelry gift ready.
Type: Natural Solid Boulder Opal Silver Pendant
Origin: Queensland Australia
Dimensions: 33×13.6×5.8 mm approx
Weight: 27 ct approx
Color: Vivid blue and violet fire with ironstone matrix
Cut/Shape: Freeform cabochon polished
Setting: S925 rhodium plated sterling silver
Treatment: 100% natural untreated opal
Boulder Opal Pendant 23.2ct Sterling Silver
AU$61323.2ct solid boulder opal pendant from Queensland, Australia, showing vivid blue fire in polished ironstone. Natural untreated gemstone in sterling silver, gift ready.
Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 23×20.6×5 mm
Whole Pendant Weight: 23.2 ct
(Size and weight are approximate)
Solid Boulder Opal Pendant Sterling Silver Pink and Mint Green 16.4 ct
AU$82716.4ct natural solid boulder opal pendant set in sterling silver. Pastel flashes of pink green and blue fire from Queensland Australia. Gift ready October birthstone necklace.
Type: Natural Solid Boulder Opal Silver Pendant
Origin: Queensland Australia
Dimensions: 26.5×10.5×4.7 mm approx
Weight: 16.4 ct approx
Color: Pastel pink green and blue fire with brown ironstone
Cut/Shape: Freeform cabochon
Necklace: S925 stamped rhodium plated sterling silver setting with chain
Treatment: 100 percent natural untreated opal not a doublet or triplet
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Silver Australian Boulder Opal Pendant with Necklace 22.1 ct
AU$570Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 26.5×12.7×4.7 mm
Whole Pendant Weight: 22.1 ct
(Size and weight are approximate)
5.67ct Natural Dark Opal Multicolor
AU$3,306Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Dimensions: 14.5×12.3×5.2 mm
Weight: 5.67 ct
(Size and weight are approximate)
3.29ct Natural Dark Opal Freeform Neon Rainbow Fire
AU$1,354Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Dimensions: 19.3×10.6×2.7 mm
Weight: 3.29 ct
(Size and weight are approximate)
3.42ct Crystal Opal Parcel 6pcs Calibrated 10x7mm
AU$5133.42ctw natural Australian crystal opal parcel from Coober Pedy featuring six calibrated pear cabochons. Each stone shows bright pastel pink, green, and blue fire with translucent crystal body. Precision matched sizing makes this parcel ideal for earrings, pendants, and fine jewelry designs.
Type: Natural Solid Crystal Opal Parcel
Origin: Coober Pedy, South Australia, Australia
Quantity: 6 calibrated pieces
Total Weight: 3.42ct approx
Individual Size: 10 x 7 x 1.5 mm approx each
Shape: Pear cabochon
Color: Pastel pink, green, and blue fire
Body Type: Crystal opal translucent body
Treatment: 100% natural, untreated opals (not doublets or triplets)
Use: Earrings, pendants, fine jewelry design, gemstone collection
1.8ct Crystal Opal Parcel 6pcs Calibrated 8x5mm
AU$5701.8ctw Calibrated crystal opal parcel from Coober Pedy, Australia featuring six matched pear cabochons with brilliant red, green, and blue fire. Precisely cut for easy jewelry setting, this natural untreated crystal opal parcel is ideal for earrings, pendants, and fine October birthstone jewelry designs.
Type: Natural Solid Crystal Opal Parcel
Origin: Coober Pedy, South Australia, Australia
Quantity: 6 pieces
Total Weight: 1.8ct approx
Dimensions: 8 x 5 x 1.3mm each approx
Color: Brilliant red, green, and blue fire with translucent crystal body tone
Cut Shape: Calibrated pear cabochon
Use: Easy to set for earrings, pendants, or fine jewelry
Treatment: 100% natural, untreated crystal opals (not doublets or triplets)
9x6mm Crystal Opal Calibrated 5.59ct
AU$7055.59ct Australian crystal opal parcel from Coober Pedy featuring eight calibrated pear cabochons with vivid neon rainbow fire. Natural, solid, untreated opals ideal for earrings, pendants, and fine jewelry designs. Perfect for October birthstone jewelry and jeweler use.
Type: Natural Solid Crystal Opal Parcel
Origin: Coober Pedy, South Australia, Australia
Quantity: 8 pieces
Total Weight: 5.59 carats approx
Dimensions: 9 x 6 x 3 mm each approx
Cut Shape: Calibrated pear cabochon
Color: Vivid neon rainbow fire with red, green, blue flashes
Treatment: 100% natural and untreated opals (not doublets or triplets)
Use: Perfect for matching earrings, pendants, fine jewelry making, or gemstone collection
2Pcs Crystal Opal Pair 1.16ctw
AU$5131.16ct Australian crystal opal pair from Coober Pedy featuring brilliant red, green, blue, and orange fire within a translucent body tone. Naturally shaped polished pear cabochons, ideal for earrings, pendants, or custom fine jewelry. 100% natural and untreated October birthstone opals.
Type: Natural Solid Crystal Opal Pair
Origin: Coober Pedy, South Australia, Australia
Quantity: 2 pieces
Total Weight: 1.16 carats approx
Dimensions: L-10.5 × 6.2 × 1.8 mm, S-6 × 4 × 1.8 mm
Shape: Natural pear cabochons (not calibrated)
Color: Brilliant red, green, blue, and orange play of color
Body Tone: Translucent crystal
Cut: Polished, jewelry ready
Treatment: 100% natural untreated opal (not a doublet or triplet)
Use: Perfect for earrings, pendants, custom fine jewelry, or collectors
1.34ct Crystal Opal Pair 2pcs Calibrated 10x7mm 8x5mm
AU$4491.34ct 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$449Opal: 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)
2.14ct Natural Black Opal Heart with Rolling Multicolor Fire
AU$2,829Natural Black Opal from Lightning Ridge Australia
Green and orange fire with deep neon glow and strong contrast
Heart shape solid untreated gem October birthstone for statement pendant or ring
Dimensions: 9.7 x 9.4 x 4.2 mm approx
Weight: 2.14 carats approx
Purity: 100% Australian opal no doublet or triplet
4.72ct Natural Dark Opal – Half Moon Multicolor
AU$456
Opal Details:
Type: 100% Natural, Solid, Untreated, PolishedÂ
Origin: Lightning Ridge, NSW, Australia
Dimensions: 24 × 9.3 × 3.5 mm (approx.)
Weight: 4.72ct (approx.)
1.26ct Natural Dark Opal – Teardrop Green Blue
AU$264Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Dimensions: 11x6x3 mm
Weight: 1.26 ct
(Size and weight are approximate)
Color: Cyan, Green, Blue
1.64ct Natural Dark Opal Bright Green Blue Cyan Fire
AU$2071.64ct natural dark opal from Lightning Ridge Australia features vibrant cyan green and blue fire glowing across its polished pear cabochon. This natural untreated solid opal is perfect for October birthstone jewelry, ready to set into rings, pendants, or fine custom jewelry designs.
Type: Natural Solid Dark Opal (Semi Black Opal)
Origin: Lightning Ridge, Australia
Dimensions: 13 x 7.5 x 3 mm (approx.)
Weight: 1.64 ct (approx.)
Color: Cyan, green, and blue fire with dark body tone
Cut/Shape: Polished pear cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
2.88ct Natural Dark Opal – Teardrop Blue Green
AU$171
 Opal Details:
-
Type: Natural, Solid, Untreated, Polished Dark Opal
-
Origin: Lightning Ridge, NSW, Australia
-
Dimensions: 14 × 8 × 4 mm (approx.)
-
Weight: 2.88 ct (approx.)
4.14ct Natural Dark Opal Teardrop Green Blue
Original price was: AU$456.AU$410Current price is: AU$410.Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, NSW, Australia
Dimensions: 17x10x4 mm
Weight: 4.14 ct
(Size and weight are approximate)
Color: Cyan, Green, Blue
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.