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Wood Fossil Boulder Opal Pendant 38ct
AU$64238ct Australian Boulder Opal pendant from Winton features vivid flashes of orange, yellow, green, and blue fire in a rounded teardrop cut. Polished and naturally drilled, it is ready to wear on a brown adjustable cord necklace. 100% natural and untreated, perfect October birthstone jewelry.
Opal Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland, Australia
Weight: 38 ct
Dimensions: 39 x 18 x 5 mm approx.
Cut Shape: Rounded teardrop, polished cabochon
Color: Sparkling orange, yellow, green, and blue fire
Pattern: Wood fossil boulder matrix with vivid play of color
Necklace: Brown adjustable cord necklace, ready to wear
Treatment: 100% natural untreated opal, not a doublet or tripletÂ
Blue Green Boulder Opal 8.03 ct
AU$642Natural Solid Untreated Australian Boulder Opal Polished Stone
Weight: 8.03 carats
Dimensions: 26x8x3.5 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Large Boulder Opal Pendant 193ct
AU$642193ct Natural Koroit boulder opal pendant from Queensland, Australia, subtle purple and blue fire veins in rich brown ironstone. 100% natural, untreated gemstone necklace, ideal for October birthstone jewelry and opal collectors.
Rainbow Boulder Opal Pendant Sterling Silver 24.5ct
AU$628Type: Natural Solid Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 24.5ctw approx. including pendant and necklace
Dimensions: 7.6 x 20 x 4 mm approx
Color: Rainbow
Shape: Elongated horizontal polished cabochon
Metal: 925 sterling silver pendant and necklace (stamped)
Necklace: 18 inch (slightly adjustable)
Treatment: 100% natural untreated opal
Sterling Silver Solid Teardrop Boulder Opal Ring 24 ct US 7
AU$628Opal: Natural, Solid, Untreated, Polished
Setting Dimensions: 20x15x5 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
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)
Boulder Opal Pendant 23.2ct Sterling Silver
AU$61323.2ct solid boulder opal pendant from Queensland, Australia, showing vivid blue fire in polished ironstone. Natural untreated gemstone in sterling silver, gift ready.
Pendant: S925 Stamped Rhodium Plated Sterling Silver
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Dimensions: 23×20.6×5 mm
Whole Pendant Weight: 23.2 ct
(Size and weight are approximate)
1.5ct Crystal Opal Parcel 4pcs Calibrated 9x6mm 8x5mm
AU$613Australian crystal opal calibrated parcel from Coober Pedy featuring four polished teardrop cabochons with vivid red pink orange yellow green blue and cyan fire. This matching set includes two medium and two smaller stones, ideal for ring and earring designs or professional jewelry making.
Type: Natural Crystal Opal Calibrated Parcel
Origin: Coober Pedy South Australia
Total Weight: 1.5 ctw
Stone Sizes: 2 pieces 9 x 6 mm and 2 pieces 8 x 5 mm
Cut: Teardrop Polished cabochon calibrated
Color: Bright red pink orange yellow green blue and cyan fire
Treatment: 100 percent natural untreated opal not doublet or triplet
Suitable For: Ring earrings pendant matching sets and professional jewelry making
2.76ct Crystal Opal Parcel 4pcs Calibrated 10x7mm 8x5mm
AU$613Australian crystal opal calibrated parcel from Coober Pedy featuring four polished teardrop cabochons with vivid red pink orange yellow green blue and cyan fire. This matching set includes two larger and two smaller stones, ideal for ring and earring designs or professional jewelry making.
Type: Natural Crystal Opal Calibrated Parcel
Origin: Coober Pedy South Australia
Total Weight: 2.76 ctw
Stone Sizes: 2 pieces 10 x 7 mm and 2 pieces 8 x 5 mm
Cut: Teardrop Polished cabochon calibrated
Color: Bright red pink orange yellow green blue and cyan fire
Treatment: 100 percent natural untreated opal not doublet or triplet
Suitable For: Ring earrings pendant matching sets and professional jewelry making
9.98ct Natural Boulder Opal Purplish Blue Green
AU$613100% Natural Boulder Opal
Weight: 9.98 ct
Dimensions: 34x8x4mm
Source: Winton, QLD, Australia
3.51ct Natural Boulder Opal Turquoise
AU$606Natural Solid Untreated PolishedÂ
Weight: 3.51 carats
Dimensions: 14×7.5×4 mm
Source: Winton, QLD, Australia
Size and weight are approximate
Koroit Blue Boulder Opal Rubbed Rough Parcel 238ctw
AU$599Weight: 328ct total weight
Dimensions: See ruler in image
Source: Koroit, QLD, Australia
Price: $420
Quantity: 5 Pieces
Description:
Note: Opals are wet to show color and taken under LED Lighting. Price includes Worldwide Registered Shipping.
Opal Doublet Parcel Calibrated 8x5mm
AU$599Australian 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
4mm Round Calibrated Opal Doublet Parcel 3.48ct
AU$599Australian 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
4mm Round Calibrated Opal Doublet Parcel 3.5ct
AU$599Australian 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
Boulder Opal Pendant Sterling Silver 24.7ct
AU$599Type: Natural Solid Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 24.7ctw approx. including pendant and necklace
Dimensions: 10 x 17.5 x 4.5 mm approx
Color: ocean 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
3.83ct Crystal Boulder Opal
AU$5993.83ct 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)
1.1ct Crystal Boulder Opal
AU$5991.1ct 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)
7.7ct Natural Boulder Opal
AU$599Opal: 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
1.75ct Natural Crystal Boulder Opal
AU$599100% Natural Solid Crystal Opal Polished Stone
Weight: 1.75 ct
Dimensions: 10.5x7x3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
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.