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2.35ct Natural Crystal Opal Lightning Ridge
AU$720Double Sided  Natural Solid Crystal Opal PolishedÂ
Weight: 2.35 ct
Dimensions: 11x7x4.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
Transparent
1.97ct Natural Dark Opal Rainbow Fire
AU$713Opal Details:
- Type: Natural, Solid, Untreated Dark Opal
- Origin: Lightning Ridge, Australia
- Dimensions: 10.6×8.8×3 mm
- Weight: 1.97ct
2.01ct Natural Faceted Crystal Opal – Oval Blue Fire
AU$713Opal Details:
Type: Natural, Solid, Untreated, Faceted
Origin: Andamooka, Australia
Dimensions: 10.7 × 8.7 × 5.6 mm (approx.)
Weight: 2.01ct (approx.)
Crystal Opal 1.07ct
AU$713100% Natural Solid Crystal Opal Polished Stone
Weight: 1.07 ct
Dimensions: 13x6x1.5 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
1.37ct Natural Crystal Boulder Opal
AU$713100% Natural Solid Crystal Opal Polished Stone
Weight: 1.37 ct
Dimensions: 11x6x3.2 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
1.64ct Natural Crystal Boulder Opal
AU$713100% Natural Solid Crystal Opal Polished Stone
Weight: 1.64 ct
Dimensions: 15×5.2×3 mm
Source: Queensland, Australia
Size and weight are approximate
Transparent
20ct Natural Boulder Opal Large Purple
AU$713100% Natural Boulder Opal
Weight: 20 ct
Dimensions: 34.5x10x4.5 mm
Source: Winton, QLD, Australia
Boulder Opal Pendant Sterling Silver 14.8ct
AU$713Type: Natural Solid Boulder Opal Necklace
Origin: Winton, Queensland, Australia
Weight: 14.8 ct approx including pendant and necklace
Dimensions: 29 x 8.4 x 4.2 mm approx
Color: Purple blue green fire
Shape: Teardrop polished cabochon
Metal: 925 sterling silver pendant (stamped)
Chain: Optional
Treatment: 100% natural untreated opal
Black Opal Electric Green Yellow 0.77ct
AU$705Type: Natural solid black opal
Origin: Lightning Ridge, Australia
Dimensions: 11 × 7.5 × 1.6 mm
Weight: 0.77ct
Treatment: 100% natural, untreated (not a doublet or triplet)
October birthstone gemstone
Boulder Opal Ring 29ct Sterling Silver US6 3/4
AU$705Green 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)
Boulder Opal Ring 15.5ct Sterling Silver US 7
AU$705Vivid 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
9x6mm Crystal Opal Calibrated 5.59ct
AU$7055.59ct Australian crystal opal parcel from Coober Pedy featuring eight calibrated pear cabochons with vivid neon rainbow fire. Natural, solid, untreated opals ideal for earrings, pendants, and fine jewelry designs. Perfect for October birthstone jewelry and jeweler use.
Type: Natural Solid Crystal Opal Parcel
Origin: Coober Pedy, South Australia, Australia
Quantity: 8 pieces
Total Weight: 5.59 carats approx
Dimensions: 9 x 6 x 3 mm each approx
Cut Shape: Calibrated pear cabochon
Color: Vivid neon rainbow fire with red, green, blue flashes
Treatment: 100% natural and untreated opals (not doublets or triplets)
Use: Perfect for matching earrings, pendants, fine jewelry making, or gemstone collection
146.94ct Large Natural Koroit Boulder Opal
AU$705100% Natural Polished Boulder Opal
Weight: 146.94 ct
Dimensions: 39x30x13 mm
Source: Koroit,QLD, Australia
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.
1.15ct Natural Dark Opal – Teardrop Multi-Color
AU$691100% Natural Solid Dark Opal Polished Stone
(partially transparency)
Weight: 1.15 ct
Dimensions: 11.5x6x2.5 mm
Source: Lightning Ridge, NSW, Australia
Size and weight are approximate
1.81ct Natural Dark Opal – Pear Green Yellow
AU$691
 Opal Details:
-
Type: Natural, Solid, Untreated, Polished Dark Opal (Partially Transparent)
-
Origin: Lightning Ridge, NSW, Australia
-
Dimensions: 12 × 10.5 × 2 mm (approx.)
-
Weight: 1.81 ct (approx.)
Black Opal 1.04ct Teal Blue Green
AU$691Natural Australian black opal gemstone with vivid multicolor fire, ideal for opal ring, opal pendant, or fine opal jewelry. Australian opal perfect for October birthstone jewelry and a meaningful gift for her.
Type: Natural Solid Black Opal
Origin: Lightning Ridge, Australia
Dimensions: 6.8 x 6.8 x 3 mm approx
Weight: 1.04ct approx
Boulder Opal Pendant 26.8 ct, Sterling Silver Green Flash Opal
AU$684Pendant: S925 Stamped Sterling Silver with Rhodium Plated
Opal: Natural, Solid, Untreated, Polished
Source: Queensland, Australia
Setting Dimensions: 32x13x3.5 mm approx
Whole Pendant Weight: 26.8 ct approx
Boulder Opal Ring Sterling Silver Size 10
AU$684Accent 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
Â
3mm Round Calibrated Opal Doublet Parcel 2.85ct
AU$684Australian opal doublet parcel 25pcs calibrated 3mm round. Matched stones showing Bright neon green, blue, gold and cyan fire, precision calibrated. ideal for stud earrings, cluster rings and small jewellery designs. Perfect size for matching pairs, earrings, rings and fine jewellery layouts.
Stone Type: Australian Opal Doublet
Size: 3mm round calibrated
Total Weight: 2.85ctw approx
Use: Rings, earrings, pendants, halo settings, fine jewelry work
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.