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Sterling Silver Purple Boulder Opal Ring 23.5 ct US 8
AU$542Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 18.5x14x5 mm
Whole Ring Weight: 23.5 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
Size and weight are approximate
Silver Koroit Boulder Opal Pendant Necklace 49 ct
AU$57049ct solid Koroit boulder opal silver pendant from Queensland Australia showing bright green and blue fire. 100% natural untreated gemstone jewelry perfect for collectors and October birthstone gifts.
Type: Natural Solid Koroit Boulder Opal Silver Pendant
Origin: Koroit Queensland Australia
Dimensions: 27x21x8 mm approx
Weight: 49 ct approx
Color: Bright green and blue fire with ironstone matrix
Cut/Shape: Oval cabochon polished
Setting: S925 rhodium plated sterling silver
Treatment: 100% natural untreated opal
Silver Purple Boulder Opal Pendant with Necklace 78 ct
AU$570Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 50x30x5.5mm
Whole Pendant Weight: 78 ct
(Size and weight are approximate)
37ct Koroit Boulder Opal Pendant
AU$463Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 35x15x6mm
Whole Pendant Weight: 37 ct
(Size and weight are approximate)
34.5ct Boulder Opal Pendant Chocolate w/ Rainbow Vein
AU$599Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 30x17x6mm
Whole Pendant Weight: 34.5 ct
(Size and weight are approximate)
60ct Silver Koroit Boulder Opal Pendant Orange
AU$641Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 46x25x6mm
Whole Pendant Weight: 60 ct
(Size and weight are approximate)
22.3ct Silver Boulder Opal Pendant Oval Brown Koroit Vein
AU$356Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 29×12.5×5.5mm
Whole Pendant Weight: 22.3 ct
(Size and weight are approximate)
35.3ct Silver Boulder Opal Pendant Brown Koroit Vein Pattern
AU$542Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 29×22.5×4.5mm
Whole Pendant Weight: 35.3 ct
(Size and weight are approximate)
86ct Boulder Opal Pendant Teardrop Multicolor Flash
AU$741Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Koroit, Queensland, Australia
Dimensions: 46x29x8mm
Whole Pendant Weight: 86 ct
(Size and weight are approximate)
Necklace Details:
• Type: Adjustable Slide Knot Cord
• Color: Black (or as preferred)
19.5ct Boulder Opal Pendant Rectangle Blue-Green
AU$570Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 24.5×11.5×4.5 mm
Whole Pendant Weight: 19.5 ct
(Size and weight are approximate)
Silver Australian Boulder Opal Pendant with Necklace 18 ct
AU$542Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 26x9x4.5 mm
Whole Pendant Weight: 18 ct
(Size and weight are approximate)
Silver Multi Color Boulder Opal Pendant with Necklace 18.7 ct
AU$641Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 28x9x5 mm
Whole Pendant Weight: 18.7 ct
(Size and weight are approximate)
Silver Boulder Opal Pendant with Necklace 27.6 ct – Blue Green
AU$641Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 41x10x6 mm
Whole Pendant Weight: 27.6 ct
(Size and weight are approximate)
Silver Australian Green Boulder Opal Pendant with Necklace 18.2 ct
AU$827Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 29×12.5×4.5 mm
Whole Pendant Weight: 18.2 ct
(Size and weight are approximate)
Silver Purple Oval Boulder Opal Pendant with Necklace 24.7 ct
AU$613Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 30×12.5×5 mm
Whole Pendant Weight: 24.7 ct
(Size and weight are approximate)
Silver Ocean Boulder Opal Pendant with Necklace 26.1 ct
AU$1,112Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 34x15x5 mm
Whole Pendant Weight: 26.1 ct
(Size and weight are approximate)
Silver Australian Boulder Opal Pendant with Necklace 24 ct
AU$670Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 31×13.5×4.6 mm
Whole Pendant Weight: 24 ct
(Size and weight are approximate)
Silver Natural Boulder Opal Pendant 34.9 ct – Stripe Rainbow Fire
AU$1,140Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 30x18x6.8 mm
Whole Pendant Weight: 34.9 ct
(Size and weight are approximate)
Sterling Silver Purple Boulder Opal Ring US7
AU$848Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 14×13.5×4 mm approx
Whole Ring Weight: 20 ct approx
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm approx
Ring Size: U7 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Boulder Opal Ring Multicolor Sterling Silver US7
AU$891Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 18.5x11x3.5 mm approx
Whole Ring Weight: 20 ct approx
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm approx
Ring Size: U7 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
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.