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

Natural Dark Opal 1.1 ct

AU$1,033

Natural 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

Add to Wishlist

Natural Boulder Opal Pendant – Blue Green

AU$143

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 18.5 carat
Dimensions: 24.5x16x6mm
Source: Winton, QLD, Australia
Size and weight are approximate

Add to Wishlist

Boulder Opal Pendant 36ct

AU$328

36ct 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.

Add to Wishlist

Blue Green Boulder Opal 8.03 ct

AU$641

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 8.03 carats
Dimensions: 26x8x3.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate

Add to Wishlist

Boulder Opal Pendant Necklace 56.4 ct

AU$392

Type: 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

Add to Wishlist

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

Add to Wishlist

4.28ct Natural Boulder Opal

AU$648

Natural Solid Untreated Polished 
Weight: 4.28 carats
Dimensions: 17x7x4 mm
Source: Winton, QLD, Australia
Size and weight are approximate

Add to Wishlist

3.51ct Natural Boulder Opal Turquoise

AU$606

Natural Solid Untreated Polished 
Weight: 3.51 carats
Dimensions: 14×7.5×4 mm
Source: Winton, QLD, Australia
Size and weight are approximate

Add to Wishlist

Green Oval Boulder Opal 32.8 ct

AU$1,710

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 32.8 carats
Dimensions: 33.5x15x6 mm
Source: Winton, QLD, Australia
Size and weight are approximate

This Opal is eligible to purchase on a Payment Plan

Add to Wishlist

Boulder Opal Pendant 66 ct

AU$342

66ct 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)

Add to Wishlist

Purple Striped Boulder Opal 28.1 ct

AU$392

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 28.1 carat
Dimensions: 27×19×5.5 mm
Source: Winton, QLD, Australia

Add to Wishlist

34.7ct Natural Boulder Opal Winton Electric Blue

AU$2,052

Natural 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

This Opal is eligible to purchase on a Payment Plan

Add to Wishlist

Aqua Blue Queensland Boulder Opal Teardrop Ringstone 3.7 ct

AU$463

Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 3.7 carats
Dimensions: 13x10x3.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate

Add to Wishlist

17.4ct Natural Boulder Opal Vivid Green Blue Gem

AU$905

Opal Details:
Type: Natural Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 17.4ct Approx
Dimensions: 32 × 13.5 × 5mm Approx

Add to Wishlist

Half Moon Natural Boulder Opal 11.3 ct

AU$570

Opal: Natural,Solid,Untreated, Polished 
Weight: 11.3 ct
Dimensions: 25x12x5 mm
Source: Winton, QLD, Australia
(Size and weight are approximate)

Add to Wishlist

13.6ct Natural Boulder Opal Blue Green Fire

AU$1,710

Natural 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

Add to Wishlist

1.06 ct Dark Opal Heart

AU$456

Natural 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

Add to Wishlist

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.)

Add to Wishlist

2.36ct Natural Faceted Crystal Opal Pair – Round

AU$278

Opal Details:

Type: Natural, Solid, Untreated, Faceted Crystal Opal

Origin: Lightning Ridge, NSW, Australia

Dimensions: 7x7x4 mm each (approx.)

Weight: 2.36ct total (approx.)

Add to Wishlist

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.

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.

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.

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.

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.

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.

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.