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3.51ct Natural Boulder Opal Turquoise

AU$607

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

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Sterling Silver Aqua Boulder Opal Ring 29 ct US 6 3/4 primary display view Australian opal ring sterling silver Opal Galaxy product image
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Sterling Silver Aqua Boulder Opal Ring 29 ct US 6 3/4 in hand view Australian opal ring sterling silver Opal Galaxy product image

Boulder Opal Ring 29ct Sterling Silver US6 3/4

Original price was: AU$707.Current price is: AU$601.

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)

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15.5ct Queensland boulder opal ring with electric blue fire set in sterling silver. Natural untreated Australian gemstone
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Sterling Silver Ocean Blue Boulder Opal Ring US 7 in hand view Australian opal ring sterling silver Opal Galaxy product image

Boulder Opal Ring 15.5ct Sterling Silver US 7

Original price was: AU$707.Current price is: AU$601.

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

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Opal Doublet Parcel Calibrated 8x5mm

AU$600

Australian opal doublet parcel with calibrated 8x5mm teardrop stones showing electric neon orange, yellow, green, and blue fire. Ideal for earrings, pendants, and small matching jewelry layouts. Strong visual impact with high contrast color play.

Stone Type: Australian Opal Doublet
Origin: Coober Pedy, Australia
Size: 8 × 5 mm approx (calibrated)
Total Weight: 3.73ctw approx

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4mm Round Calibrated Opal Doublet Parcel 3.48ct

AU$600

Australian opal doublet parcel calibrated 4mm round. Matched stones showing bright neon green, teal, and deep blue fire. Perfect for rings, earrings, pendants, and matched sets. Suitable for both custom jewelers and small production work.

Stone Type: Australian Opal Doublet
Size: 4mm round calibrated
Total Weight: 3.48ctw approx
Use: Rings, earrings, pendants, halo settings, fine jewelry work

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4mm Round Calibrated Opal Doublet Parcel 3.5ct

AU$600

Australian opal doublet parcel 25pcs calibrated 4mm round. Bright multicolor fire with strong green, blue, orange, and yellow flashes in a calibrated 4mm round parcel. Ideal for rings, earrings, pendants, and matching jewelry sets. Consistent sizing for production or custom work.

Stone Type: Australian Opal Doublet
Size: 4mm round calibrated
Total Weight: 3.5ctw approx
Use: Rings, earrings, pendants, halo settings, fine jewelry work

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3.83ct Crystal Boulder Opal

AU$600

3.83ct Australian crystal boulder opal showing brilliant green fire with purple body. Natural and untreated gemstone perfect for fine jewelry or October birthstone collections.

Type: Natural Solid Crystal Boulder Opal (Pipe Opal)
Origin: Queensland, Australia
Dimensions: 13.8 × 8.4 × 4.7 mm (approx.)
Weight: 3.83 ct (approx.)
Color: Brilliant green and blue fire with pink undertones
Cut/Shape: Oval cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)

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1.1ct Crystal Boulder Opal

AU$600

1.1ct Australian crystal opal bright green fire with vivid lavender-blue. 100% Natural and untreated gemstone ideal for fine jewelry or October birthstone collectors.

Type: Natural Solid Crystal Opal (Crystal Boulder Opal)
Origin: Queensland, Australia
Dimensions: 10.5 × 7.5 × 2.6 mm (approx.)
Weight: 1.1 ct (approx.)
Color: Green fire with lavender-blue tone (appears magenta in camera)
Cut/Shape: Teardrop cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)

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7.7ct Natural Boulder Opal

AU$600

Opal: Natural, Solid, Untreated, Polished
Color: Green, Blue, Pink
Shape: Freeform (Marquis)
Weight: 7.7 ct
Dimensions: 30x8x4.5mm
Source: Winton, QLD, Australia
Size and weight are approximate

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1.75ct Natural Crystal Boulder Opal

AU$600

100% Natural Solid Crystal Opal Polished Stone
Weight: 1.75 ct
Dimensions: 10.5x7x3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent

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22.68ct Double Sided Natural Koroit Boulder Opal

AU$600

100% Natural Polished Boulder Opal
Weight: 22.68 ct
Dimensions: 36×17.5×3.5 mm
Source: Koroit,QLD, Australia

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23.11ct Natural Boulder Opal Deep Blue Fire

AU$600

100% Natural Boulder Opal
Weight: 23.11 ct
Dimensions: 29.5x17x5 mm
Source: Winton, QLD, Australia

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12.47ct Natural Australian Crystal Boulder Opal

AU$600

Natural Solid Untreated Australian Pipe Crystal Boulder Opal Polished Stone
Weight: 12.47 carats
Dimensions: 18x12x.6.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate

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293g Koroit boulder opal matrix rubs rough parcel of 10 pieces from Queensland, Australia with golden amber ironstone, teal veining, and purple concentric ring patterns. Natural, untreated.
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293g Koroit boulder opal matrix rubs parcel from Queensland, Australia showing warm golden amber ironstone with natural web patterns and teal opal veining. 100% natural and untreated.

Koroit Boulder Opal Matrix Rubbed Rough Parcel 293g

Original price was: AU$743.Current price is: AU$594.

Weight: 293 gram total weight
Dimensions: See ruler in image
Source: Koroit, QLD, Australia
Price: $520
Quantity: 10 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.

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38ct Lightning Ridge black opal rubs parcel of 5 pieces from Australia with deep blue, purple, green, and teal fire on dark body tones. Natural, untreated.
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38ct Lightning Ridge black opal rubs parcel from Australia showing deep blue and purple fire on larger pieces with vivid green and teal fire on smaller stones. 100% natural and untreated.

Lightning Ridge Rubbed Opal Parcel 38ctw

Original price was: AU$743.Current price is: AU$594.

Weight: 38ct total weight
Dimensions: See ruler in image
Source: Lightning Ridge, NSW, Australia
Price: $520
Quantity: 5 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.

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60ct Lightning Ridge opal rubs parcel of 5 pieces from Australia featuring crystal, black, and white opal with purple, blue, teal, and green fire. Natural, untreated.
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60ct Lightning Ridge opal rubs parcel from Australia showing crystal opal, black opal, and white opal with purple, blue, and pink fire. 100% natural and untreated.

Lightning Ridge Rubbed Opal Parcel 60ctw

Original price was: AU$743.Current price is: AU$594.

Weight: 60ct total weight
Dimensions: See ruler in image
Source: Lightning Ridge, NSW, Australia
Price: $520
Quantity: 5 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.

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78ct Lightning Ridge black opal rubs parcel of 5 pieces from Australia with deep blue, purple, and teal fire on dark body tones. Natural, untreated.
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78ct Lightning Ridge black opal rubs parcel from Australia showing deep blue and purple fire on the large piece with teal and green fire on smaller stones. 100% natural and untreated.

Lightning Ridge Rubbed Opal Parcel 78ctw

Original price was: AU$743.Current price is: AU$594.

Weight: 78ct total weight
Dimensions: See ruler in image
Source: Lightning Ridge, NSW, Australia
Price: $520
Quantity: 5 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.

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boulder-opal-ring-open-shank-sterling-silver-side-view-opal-galaxy

Boulder Opal Ring Sterling Silver Size 10

Original price was: AU$685.Current price is: AU$583.

Accent Stone: Faceted Amethyst

Setting: Bezel set opal with prong set amethyst

Ring Size: US 10

Opal Weight: 1.1ct

Amethyst Weight: 0.63ct

Total Weight: 11.2ctw

 

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Natural 24.5ct crystal boulder opal pendant in sterling silver showing multicolor fire with red green and blue flashes
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Australian crystal opal pendant necklace worn on model, horizontal sterling silver setting with red and green fire. Natural solid untreated opal jewelry.

Crystal Boulder Opal Pendant Sterling Silver 24.5ct

Original price was: AU$685.Current price is: AU$583.

Type: Natural Solid Crystal Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 24.5ctw approx. including pendant and necklace
Dimensions: 10 x 16.5 x 4.7 mm approx
Color: pink, orange, green
Shape: Elongated horizontal polished cabochon
Metal: 925 sterling silver pendant and necklace (stamped)
Chain: 18 inch (slightly adjustable)
Treatment: 100% natural untreated opal

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Front view of deep blue and green boulder opal pendant angled style 23.7ct on adjustable silver chain.
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Boulder opal pendant deep blue and green angled style worn on adjustable silver chain natural untreated Australian opal 23.7ct.

Boulder Opal Pendant Sterling Silver Necklace

Original price was: AU$671.Current price is: AU$571.

Type: Natural Solid Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 23.7ctw approx. including pendant and necklace
Dimensions: 9 x 20 x 4 mm approx
Color: deep blue green
Shape: Elongated horizontal polished cabochon
Metal: 925 sterling silver pendant and necklace (stamped)
Chain: 18 inch (slightly adjustable)
Treatment: 100% natural untreated opal

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.