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1.57ct Natural Boulder Opal
AU$306100% Natural Solid Boulder Opal Polished Stone
Weight: 1.57 ct
Dimensions: 12x6x2 mm
Source: Winton,QLD, Australia
Size and weight are approximate
3.03ct Natural Boulder Opal
AU$306100% Natural Solid Boulder Opal Polished Stone
Weight: 3.03 ct
Dimensions: 19×6.5×2.2 mm
Source: Winton,QLD, Australia
Size and weight are approximate
Opal Doublet Parcel Calibrated 5×2.5mm
AU$298Opal doublet calibrated marquise set displays vivid neon Greenl and blue fire across deep body tones. Perfectly matched for custom earrings or fine jewelry.
Stone Type: Australian Opal Doublet
Size: 5 x 2.5 mm approx (calibrated)
Total Weight: 1.58 ctw approx
Origin: Coober Pedy, Australia
Suitable For: Earrings, rings, pendants, custom jewelry
Opal Doublet Parcel Calibrated 5×2.5mm
AU$298Opal doublet calibrated marquise set displays vivid neon Greenl and blue fire across deep body tones. Perfectly matched for custom earrings or fine jewelry.
Stone Type: Australian Opal Doublet
Size: 5 x 2.5 mm approx (calibrated)
Total Weight: 1.58 ctw approx
Origin: Coober Pedy, Australia
Suitable For: Earrings, rings, pendants, custom jewelry
3.48ct Natural Boulder Opal Vivid Blue Green Fire
AU$284💎 Opal Details:
Carat Weight: 3.48ct
Dimensions: 20 × 6 × 3 mm
Type: Natural Solid Boulder Opal
Source: Winton, QLD, Australia
Size & Weight: Approximat
Wood Fossil Boulder Opal Pendant 58ct
AU$27758ct Australian wood fossil boulder opal pendant from Winton, Queensland featuring natural brown ironstone with subtle blue and purple fire. Polished organic shape with a natural drilled hole, supplied with a dark brown adjustable cord. 100% natural and untreated, ideal for October birthstone jewelry.
Opal Type: Natural Solid Wood Fossil Boulder Opal
Origin: Winton, Queensland, Australia
Weight: 58 carat
Dimensions: 44 x 24 x 6 mm
Color: Natural brown fossil ironstone with blue and purple fire
Cut / Shape: Polished freeform cabochon
Pendant Style: Natural drilled pendant
Necklace: Dark brown adjustable cord included
Treatment: 100% natural and untreated
Not: Doublet or triplet
Wood Fossil Boulder Opal Pendant 25ct
AU$27725ct Australian wood fossil boulder opal pendant featuring vivid green and blue fire running through natural ironstone. Polished cabochon with organic shape, supplied with a brown adjustable cord. 100% natural and untreated, ideal for October birthstone jewelry and everyday wear.
Opal Type: Natural solid wood fossil boulder opal
Origin: Australia
Weight: 25 carats
Dimensions: 29 × 17 × 6 mm
Color: Vivid green and blue fire with ironstone matrix
Cut / Shape: Polished cabochon pendant
Necklace: Brown adjustable braided cord
Treatment: 100% natural and untreated
Use: Pendant jewelry, October birthstone, gift or daily wear
2.36ct Natural Faceted Crystal Opal Pair – Round
AU$277Opal Details:
Type: Natural, Solid, Untreated, Faceted Crystal Opal
Origin: Lightning Ridge, NSW, Australia
Dimensions: 7x7x4 mm each (approx.)
Weight: 2.36ct total (approx.)
7 Piece Unique Boulder Opal Rubs Parcel 177g
Original price was: AU$355.AU$266Current price is: AU$266.Weight: 177 gram total weight
Dimensions: see ruler in image
Source: Winton, QLD, Australia
Quantity: 7 Pieces
Photos and Video taken under LED Lighting. Opals are wet to show color. Price includes Worldwide Shipping.
7 Piece Unique Boulder Opal Rubs Parcel 136g
Original price was: AU$355.AU$266Current price is: AU$266.Weight: 136 gram total weight
Dimensions: see ruler in image
Source: Winton, QLD, Australia
Quantity: 7 Pieces
Photos and Video taken under LED Lighting. Opals are wet to show color. Price includes Worldwide Shipping.
1.26ct Natural Dark Opal – Teardrop Green Blue
AU$263Opal: Natural, Solid, Untreated, Polished
Source: Lightning Ridge, Australia
Dimensions: 11x6x3 mm
Weight: 1.26 ct
(Size and weight are approximate)
Color: Cyan, Green, Blue
Boulder Opal Pendant 71.5ct
AU$26371.5ct Koroit boulder opal pendant with green fire in natural wood fossil ironstone. Solid untreated Australian opal on adjustable cord, ready to wear.
Dimensions: 49.5 × 30 × 6.5 mm approx
Weight: 71.5 ct
Origin: Koroit, Queensland Australia
Opal Type: Natural Solid Wood Fossil Boulder Opal
Necklace: Adjustable dark brown cord
Treatment: 100% natural untreated opal
5.6ct Natural Crystal Boulder Opal
AU$263Natural Solid Untreated Australian Crystal Boulder Opal Polished Stone
Weight: 5.6 ct
Dimensions:21.5x6x5.5mm
Source: Winton, QLD, Australia
Size and weight are approximate
Solid Wood Fossil Boulder Opal Pendant – Blue Green Fire
AU$256Opal Details:
Type: Natural, Solid, Untreated, Polished Boulder Opal
Origin: Koroit, Queensland, Australia
Dimensions: 38.5 × 17.5 × 7 mm (approx.)
Weight: 40.5ct (approx.)
Necklace Details:
Type: Adjustable Slide Knot Cord
Cord Color: Brown Waxed Cord
Boulder Opal Pendant with Adjustable Necklace 56 ct
AU$256Opal Weight: 56 ct
Opal Dimensions: 52x17x7 mm
Source: Winton, QLD, Australia
Boulder Opal Pendant 43ct
AU$24943ct natural Australian boulder opal pendant from Queensland with pink, orange and green fire in brown ironstone. 100% natural, drilled, untreated gemstone necklace on adjustable cord, perfect as unisex opal jewelry, October birthstone pendant, and gift ready jewelry.
Wood Fossil Boulder Opal Pendant 25ct
AU$249This 25ct Australian boulder opal pendant from Winton shows vivid blue purple and green fire within its polished ironstone body. The rounded teardrop cut and brown adjustable cord create a natural and wearable design. 100% untreated, perfect for daily wear, gifting and October birthstone jewelry.
Type: Natural solid boulder opal pendant
Origin: Winton, Queensland, Australia
Dimensions: 25 x 18 x 5 mm
Weight: 25 ct
Color: Blue, purple and green fire with ironstone matrix
Cut/Shape: Rounded teardrop cut, drilled
Necklace: Brown adjustable cord
Treatment: 100% natural untreated opal (not a doublet or triplet)
Wood Fossil Boulder Opal Pendant 19ct
AU$24219ct Australian wood fossil boulder opal pendant from Winton, Queensland featuring glittery turquoise and green fire within natural ironstone. Polished drilled cabochon paired with a beige adjustable cord. 100% natural and untreated, ideal for October birthstone jewelry and everyday statement wear.
Opal Type: Natural solid wood fossil boulder opal
Origin: Winton, Queensland, Australia
Weight: 19 carat
Dimensions: 23 x 14 x 7.5 mm (approx.)
Color: Glittery turquoise and green fire with natural ironstone
Cut / Shape: Polished cabochon with drilled hole
Pendant Style: Organic freeform cabochon (not flat freeform slab)
Necklace: Beige adjustable cord, ready to wear
Treatment: 100% natural, untreated opal (not a doublet or triplet)
Boulder Opal Rubs Rough Parcel 2 Piece 71g
Original price was: AU$313.AU$234Current price is: AU$234.Weight: 71 grams total weight
Dimensions: See ruler in image
Quantity: 2 Pieces
Source: Winton, QLD, Australia
Price: $220
Description: Opal rubs are wet to show color and taken under LED lighting. Price includes Worldwide Shipping with Insurance.
Sterling Silver Purple Triangle Boulder Opal Ring 21 ct US 7
AU$234Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 16x14x5 mm approx
Whole Ring Weight: 21 ct approx
Ring: S925 (Stamped), Rhodium Plated, Sterling Silver
Ring Band Dimension: 3.5 mm approx
Ring Size: US7 (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.