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Natural Dark Opal 1.1 ct
AU$1,033Natural Solid Untreated Lightning Ridge Dark Opal / Semi Black Opal Polished Stone
Weight: 1.1 ct
Dimensions: 9.5x7x2 mm
Source : Lightning Ridge, NSW, Australia
Size and weight are approximate
Natural Boulder Opal Pendant – Blue Green
AU$143Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 18.5 carat
Dimensions: 24.5x16x6mm
Source: Winton, QLD, Australia
Size and weight are approximate
Boulder Opal Pendant 36ct
AU$32836ct Solid Boulder Opal pendant necklace from Winton Queensland Australia shows vivid blue purple and green fire. 100% natural untreated and ethically sourced ready to wear jewelry perfect for collectors and opal lovers.
Blue Green Boulder Opal 8.03 ct
AU$641Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 8.03 carats
Dimensions: 26x8x3.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Boulder Opal Pendant Necklace 56.4 ct
AU$392Type: 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
3.48ct Natural Boulder Opal Vivid Blue Green Fire
AU$285💎 Opal Details:
Carat Weight: 3.48ct
Dimensions: 20 × 6 × 3 mm
Type: Natural Solid Boulder Opal
Source: Winton, QLD, Australia
Size & Weight: Approximat
4.28ct Natural Boulder Opal
AU$648Natural Solid Untreated PolishedÂ
Weight: 4.28 carats
Dimensions: 17x7x4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
3.51ct Natural Boulder Opal Turquoise
AU$606Natural Solid Untreated PolishedÂ
Weight: 3.51 carats
Dimensions: 14×7.5×4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Green Oval Boulder Opal 32.8 ct
AU$1,710Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 32.8 carats
Dimensions: 33.5x15x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Boulder Opal Pendant 66 ct
AU$34266ct Australian Boulder Opal pendant from Winton shows bright purple fire glowing through its natural ironstone body. Polished rectangular freeform cut and finished with a black adjustable necklace, it is ready for daily wear or gifting. Natural untreated opal ideal for October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland Australia
Dimensions: 34.5×23×8.5 mm approx
Weight: 66 carats approx
Color: Bright purple fire with rich brown ironstone
Cut/Shape: Polished rectangular freeform, drilled
Necklace: Black adjustable cord, ready to wear
Treatment: 100 percent natural untreated opal (not a doublet or triplet)
Purple Striped Boulder Opal 28.1 ct
AU$392Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 28.1 carat
Dimensions: 27×19×5.5 mm
Source: Winton, QLD, Australia
34.7ct Natural Boulder Opal Winton Electric Blue
AU$2,052Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 34.7 carats
Dimensions: 34.5×19.5×6 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Aqua Blue Queensland Boulder Opal Teardrop Ringstone 3.7 ct
AU$463Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 3.7 carats
Dimensions: 13x10x3.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate
17.4ct Natural Boulder Opal Vivid Green Blue Gem
AU$905Opal Details:
Type: Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 17.4ct Approx
Dimensions: 32 × 13.5 × 5mm Approx
Half Moon Natural Boulder Opal 11.3 ct
AU$570Opal: Natural,Solid,Untreated, PolishedÂ
Weight: 11.3 ct
Dimensions: 25x12x5 mm
Source: Winton, QLD, Australia
(Size and weight are approximate)
13.6ct Natural Boulder Opal Blue Green Fire
AU$1,710Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 13.6 carats
Dimensions: 26.5x12x7 mm
Source: Winton, QLD, Australia
Size and weight are approximate
This opal has undulation as can be seen in the photos and video
1.06 ct Dark Opal Heart
AU$456Natural 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
4.5ct Natural Faceted Crystal Opal Pair – Oval
AU$542
Opal Details:
Type: Natural, Solid, Untreated, Faceted Crystal Opal
Origin: Lightning Ridge, NSW, Australia
Dimensions: 12x10x3.5 mm each (approx.)
Weight: 4.5ct total (approx.)
2.36ct Natural Faceted Crystal Opal Pair – Round
AU$278Opal Details:
Type: Natural, Solid, Untreated, Faceted Crystal Opal
Origin: Lightning Ridge, NSW, Australia
Dimensions: 7x7x4 mm each (approx.)
Weight: 2.36ct total (approx.)
2.7ct Natural Faceted Crystal Opal Pair – Oval
AU$378💎 Opal Details:
Type: Natural, Solid, Untreated, Polished Faceted Crystal Opal
Origin: Lightning Ridge, NSW, Australia
Dimensions: 10 × 7 × 3.5 mm (each, approx.)
Total Weight: 2.7ctw (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.