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
Add to Wishlist

Sterling Silver Purple Freeform Boulder Opal Ring 30 ct US 9

AU$1,712

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 25×13.5×6 mm
Whole Ring Weight: 30 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US9 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

Add to Wishlist

Sterling Silver Ocean Blue Boulder Opal Ring 35.5 ct US 9 3/4

AU$992

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 20×16.5×5.5 mm
Whole Ring Weight: 35.5 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US9 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

Add to Wishlist

Sterling Silver Half Moon Ocean Boulder Opal Ring 30 ct US 7 3/4

AU$978

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 23×15.5×5 mm
Whole Ring Weight: 30 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US7 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

Add to Wishlist

Sterling Silver Ocean Blue Boulder Opal Ring 28.5 ct US 8

AU$1,855

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 26.5x10x6 mm
Whole Ring Weight: 28.5 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

Add to Wishlist

Sterling Silver Ocean Boulder Opal Ring 19 ct US 7

AU$935

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 16.5x11x4.5 mm
Whole Ring Weight: 19 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
Size and weight are approximate

Add to Wishlist

Sterling Silver Sparkling Boulder Opal Ring 24 ct US 7

AU$778

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 18x17x5 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
Size and weight are approximate

Add to Wishlist

Sterling Silver Sparkling Boulder Opal Ring US 7

AU$649

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 14.5x11x4 mm
Whole Ring Weight: 16 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
Size and weight are approximate

Add to Wishlist

Boulder Opal Ring 28.5ct Sterling Silver US6 1/4

AU$464

Green flash and electric blue shimmer across natural ironstone in this solid Australian boulder opal ring. Large freeform bezel set in sterling silver, perfect for bold October birthstone jewelry.

Ring Size: US6 1/4 (not resizable)
Metal: S925 Sterling Silver, rhodium plated
Origin: Queensland, Australia
Setting Dimensions: 19 × 17 × 5.5 mm approx.
Weight: 28.5 ct approx. (whole ring)
Opal Type: Natural Solid Boulder Opal
Treatment: None (100% natural, not a doublet or triplet)
Additional custom lighting image requests are not available.

Add to Wishlist

Boulder Opal Ring 29ct Sterling Silver US6 3/4

AU$706

Green flash shimmers through natural ironstone in this solid Australian boulder opal ring. Bezel set in sterling silver, perfect for October birthstone jewelry.

Ring Size: US6 3/4 (not resizable)
Metal: S925 Sterling Silver, rhodium plated
Origin: Queensland, Australia
Setting Dimensions: 18.5 × 16.5 × 5.5 mm approx.
Weight: 29 ct approx. (whole ring)
Opal Type: Natural Solid Boulder Opal
Treatment: None (100% natural, not a doublet or triplet)

Add to Wishlist

Boulder Opal Ring 15.5ct Sterling Silver US 7

AU$706

Vivid blue fire defines this natural Australian boulder opal ring. Teardrop bezel set in sterling silver, perfect for everyday wear and October birthstone jewelry.

Ring Size: US7 (size change not available)
Dimensions: 17 x 10 x 3.5 mm approx.
Weight: 15.5ct 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

Add to Wishlist

Sterling Silver Purple Boulder Opal Ring 37ct US 8 3/4

AU$999

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 20.5×16.5×6 mm
Whole Ring Weight: 37 ct
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US8 3/4 (Size change is not available)
Bezel set in Hypoallergenic Rhodium Plated 925 Sterling Silver
Size and weight are approximate

Add to Wishlist

Boulder Opal Ring 30ct Sterling Silver US9

AU$564

Deep purple and electric blue fire define this natural Australian boulder opal ring. Large rectangular bezel set in sterling silver, perfect for a bold statement and October birthstone jewelry.

Ring Size: US9 (size change not available)
Dimensions: 19 x 15 x 5.5 mm approx.
Weight: 30ct 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

Add to Wishlist

Boulder Opal Ring 20.5ct Sterling Silver US7

AU$906

Vivid blue and green fire define this natural Australian boulder opal ring. Teardrop bezel set in sterling silver, perfect for a bold statement and October birthstone jewelry.

Ring Size: US7 (size change not available)
Dimensions: 20 x 12 x 5 mm approx.
Weight: 20.5ct 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

Add to Wishlist

Boulder Opal Ring 17ct Sterling Silver Blue Fire US7

AU$521

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

Add to Wishlist

Sterling Silver Blue Purple Boulder Opal Ring 19 ct US 7

AU$564

Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 19x11x5mm approx
Whole Ring Weight: 19 ct approx
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm
Ring Size: US7 (Size change is not available)
Note: Opal contains a minor hairline fracture

Add to Wishlist

Sterling Silver Purple Boulder Opal Ring 23.5 ct US 8

AU$542

Opal: 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

Add to Wishlist

Silver Koroit Boulder Opal Pendant Necklace 49 ct

AU$571

49ct 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

Select options This product has multiple variants. The options may be chosen on the product page
Add to Wishlist

Silver Purple Boulder Opal Pendant with Necklace 78 ct

AU$571

Pendant: 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)

Select options This product has multiple variants. The options may be chosen on the product page
Add to Wishlist

37ct Koroit Boulder Opal Pendant

AU$464

Pendant: 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)

Select options This product has multiple variants. The options may be chosen on the product page
Add to Wishlist

34.5ct Boulder Opal Pendant Chocolate w/ Rainbow Vein

AU$599

Pendant: 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)

Select options This product has multiple variants. The options may be chosen on the product page

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.