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2.7ct Black Opal Green Blue Fire
AU$1,5682.7ct Australian black opal from Lightning Ridge featuring vivid green and blue rolling fire across a dark body tone. Freeform polished cabochon, 100% natural and untreated. Ideal for fine jewelry, statement rings, pendants, and a striking October birthstone gemstone.
Opal Type: Natural Solid Black Opal
Origin: Lightning Ridge, New South Wales, Australia
Weight: 2.7 carats
Dimensions: 15 × 11.3 × 3 mm approx
Shape: Freeform cabochon
Color: Bright green and blue rolling fire
Treatment: 100% natural and untreated, not a doublet or triplet
Use: Ring stone, pendant stone, fine jewelry, collector gemstone
1.8ct Black Opal Green Blue Fire
AU$1,1541.8ct Australian black opal from Lightning Ridge featuring vivid teal green and blue fire. Freeform polished cabochon with strong brightness, ideal for fine jewelry, rings, or collector use. Natural and untreated October birthstone opal.
Opal Type: Natural Solid Black Opal
Origin: Lightning Ridge, New South Wales, Australia
Weight: 1.8 carats
Dimensions: 14.5 × 8.1 × 2.8 mm approx
Shape: Freeform cabochon
Color: Neon teal green and blue fire
Treatment: 100% natural and untreated, not a doublet or triplet
Use: Ring stone, pendant, fine jewelry, collector gemstone
5.11ct Black Opal Electric Blue
AU$2,0091.90ct solid Australian dark opal from Lightning Ridge featuring vivid rainbow fire with red, green, blue, cyan, and violet flashes. Polished elongated oval cabochon cut ideal for an elegant opal ring or pendant. Natural untreated October birthstone gemstone with refined brilliance.
Type: Natural Solid Dark Opal
Origin: Lightning Ridge, New South Wales, Australia
Weight: 1.90ct
Dimensions: approx. 12.5 x 6.9 x 3.0mm
Color: Vivid rainbow fire with red, green, blue, cyan, and violet
Cut / Shape: Oval cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
5.47ct Black Opal Blue Green Fire
AU$15,6545.47ct solid Australian black opal from Lightning Ridge featuring intense blue and green fire with electric flashes across a deep dark body tone. Polished oval cabochon with excellent dome, perfect as a statement ring stone or high end opal jewelry centerpiece.
Type: Natural Solid Black Opal Gemstone
Origin: Lightning Ridge, New South Wales Australia
Weight: 5.47 carats
Dimensions: 14.3 x 11 x 5.6 mm approx
Color: Vivid blue and green fireÂ
Cut Shape: Oval cabochon
Treatment: 100 percent natural untreated opal not a doublet or triplet
Boulder Opal Pendant 20ct
AU$19220ct Solid Boulder Opal pendant necklace from Queensland Australia with vivid multicolor fire across a natural brown matrix. 100% natural untreated ready to wear opal jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Queensland Australia
Weight: 20ct approx
Dimensions: 28x13x5.5 mm
Shape: Freeform pendant
Color: Multicolor fire across brown matrix
Treatment: Untreated 100% natural
Necklace: Adjustable cord ready to wear
14x9mm + 7x5mm Crystal Opal Calibrated 2.08ct
AU$1,140Australian crystal opal calibrated set from Coober Pedy featuring teardrop and pear shaped cabochons. Displaying vivid bright fire with pink orange yellow green and blue flashes, ideal for fine jewelry making and matched designs.
Type: Natural Crystal Opal Calibrated Set
Origin: Coober Pedy South Australia
Total Weight: 2.08ctw approx
Stone Sizes: 1 piece 14 x 9 mm and 1 piece 7 x 5 mm
Shape: Teardrop and pear polished cabochon
Color: Vivid bright fire with pink orange yellow green and blue flashes
Appearance: Crystal to semi crystal transparency
Treatment: 100% natural untreated opal not doublet or triplet
Suitable For: Pendant ring earrings matched jewelry designs
1.29ct Dark Opal Heart
AU$5631.29ct Australian semi black opal heart from Lightning Ridge features vivid orange yellow green and blue fire across its polished surface. Cut in a romantic heart shape, this natural untreated opal is ideal for rings or pendants and a meaningful October birthstone gemstone.
Type: Natural solid semi black opal / Dark Opal
Origin: Lightning Ridge, NSW, Australia
Weight: 1.29 ct
Dimensions: 7.6 × 9.3 × 3.1 mm approx
Color: Orange yellow green blue fire
Cut Shape: Heart cabochon
Treatment: 100% natural untreated opal (not a doublet or triplet)
Use: Ring stone, pendant stone, custom jewelry, collector gemstone
3.5kg Boulder Opal Rough Parcel (18 Pieces)
Original price was: AU$926.AU$695Current price is: AU$695.Weight: 3.5 kg total weight
Dimensions: see ruler in image
Source: Winton, QLD, Australia
Quantity: 41 Pieces
Opals are wet to show color. Photos taken under natural sunlight and LED Lighting. Video taken under LED lighting. Price includes Worldwide Shipping. Express shipping unavailable due to weight.
Wood Fossil Boulder Opal Pendant 95ct
AU$55695ct Australian Boulder Opal pendant from Winton displays vivid blue, green, and white opal patterns through natural wood fossil matrix. Polished freeform cut with brown adjustable necklace, this natural untreated gemstone pendant is ideal for daily wear, gifting, and meaningful October birthstone jewelry.
Type: Natural Solid Boulder Opal Pendant
Origin: Winton, Queensland Australia
Dimensions: 50x30x8 mm (approx.)
Weight: 95 ct (approx.)
Color: Blue green fire with white opal and wood fossil matrix
Cut/Shape: Polished freeform pendant
Necklace: Brown adjustable cord, ready to wear
Treatment: 100% natural untreated opal (not a doublet or triplet)
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Earth Mined Opal Chips
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Mineral Collector Stones
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Opal Decoration Jar
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Healing Crystal Chips
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Loose Raw Opal Stones
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
Gem Pipe Crystal Boulder Opal Chips Jar 50ctw – Rainbow Flash Opals
AU$143Weight: 50 carat total approximate weight
Dimensions: Jar 50x22x22mm (including lid)
Source: Quilpie, QLD, Australia
Quantity: Various
Gem Quality Pipe Crystal Opal chips ideal for souvenir, use as inlay material or cutting. Some opals are of size to cut small gems. Photos and Video taken under LED lighting. Jar filled with either water or oil.
10.21ct Boulder Opal Electric Multicolor Fire
AU$11,82810.17ct Australian boulder opal showing dazzling golden orange yellow red green and blue fire. Expertly cut and polished in a freeform cabochon shape, 100% natural and untreated. Ideal for rings, pendants, statement jewelry, and a vibrant October birthstone gemstone.
Type: Natural Solid Boulder Opal Gemstone
Origin: Queensland, Australia
Dimensions: 21×12.1×4.7mm
Weight: 10.17ct
Color: Golden orange yellow red green and blue fireÂ
Cut/Shape: Freeform polished cabochon
Treatment: 100% natural untreated opal (not a doublet or triplet)
1.4ct Crystal Opal Green Purple Blue
AU$3141.4ct Australian crystal opal with green purple and blue fire. 100% natural untreated and polished square cut cabochon. Ready to be set into rings pendants and fine jewelry. A radiant October birthstone gemstone perfect for custom designs.
Type: Natural solid crystal opal (Pipe Opal)
Origin: Queensland, Australia
Dimensions: 8.1 x 8.4 x 2.6 mm
Weight: 1.4ct
Color: Vibrant green purple blue fire
Cut/Shape: Freeform cabochon
Treatment: 100 percent natural untreated opal, not a doublet or triplet
1.53ct Crystal Opal Green Blue Fire
AU$3281.53ct Australian crystal opal displays vibrant green and blue fire across its polished oval cabochon. With its natural body tone and flashes, it is ideal for fine jewelry design including rings and pendants. A beautiful October birthstone gemstone for unique custom pieces.
Type: Natural solid crystal opal (Pipe Opal)
Origin: Queensland, Australia
Dimensions: 13.5 x 6 x 3 mm
Weight: 1.53ct
Color: Vibrant green blue fire with pastel tones
Cut/Shape: Oval cabochon
Treatment: 100 percent natural untreated opal, not a doublet or triplet
1.78ct Crystal Opal Green Blue Fire
AU$3141.78ct Australian crystal opal bright green blue and purple fire polished freeform shape. 100% Natural and untreated, this shimmering gemstone is ideal for fine jewelry including rings and pendants, and is perfect for October birthstone lovers and opal collectors.
Type: Natural solid crystal opal gemstone
Origin: Australia
Dimensions: 14.2 x 6.8 x 3 mm
Weight: 1.78ct
Color: Bright green blue purple fire, pastel body tone
Cut/Shape: Freeform polished cut
Treatment: 100% natural untreated opal, not a doublet or triplet
1.48ct Crystal Boulder Opal
AU$3921.48ct Australian crystal opal with vibrant green and blue fire in a polished teardrop cut. Natural and untreated with pastel undertones and bright play of color. Ideal for opal rings, pendants, and October birthstone jewelry.
Type: Natural Solid Crystal Opal (Pipe Opal)
Origin: Queensland, Australia
Weight: 1.48ct
Dimensions: 11.8 x 7.8 x 2.7 mm
Color: Bright green blue fire
Cut/Shape: Teardrop polished cabochon
Treatment: 100% natural, untreated opal (not a doublet or triplet)
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.