Top Gem Rainbow Duck Creek Boulder Opal 55.3 ct
This opal was mined in Duck Creek in the 1980’s. Mining efforts there ceased due to being fully mined out until since recently some miners have revisited old mine sites however not much was found. This boulder opal is full...
$25,000.00
Top Gem Australian Boulder Opal 54.20 ct
This opal was mined in Duck Creek in the 1980’s. Mining efforts there ceased due to being fully mined out until since recently some miners have revisited old mine sites however not much was found. This boulder opal is full...
$13,550.00
Top Gem A+ Grade Australian Boulder Opal 59.90 ct
This opal was mined in Duck Creek in the 1980’s. Mining efforts there ceased due to being fully mined out until since recently some miners have revisited old mine sites however not much was found. This boulder opal is full...
$11,980.00
Gem Boulder Opal 60.90 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 60.90 caratDimensions: 37x29x7mmSource: Winton, QLD, AustraliaSize and weight are approximate We may consider a reasonable offer on some of our opals. If you’d like to do so please send thru the enquiry...
$9,150.00
Large Double Sided Wood Fossil Boulder Opal Specimen 214.9 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimensions (mm) 75x25x12 mmWeight 214.9 ctsStunning Large Double Sided Wood Fossil / Replacement Boulder Opal SpecimenItem type : Natural Solid Boulder Opal StoneSource : Koroit Queensland, AustraliaItem code : MM312Size and weight are...
$3,500.00
Gem Chaff Pattern Winton Boulder Opal 12.8 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 12.8 caratsDimensions: 23x9x4mmSource: Winton, QLD, AustraliaSize and weight are approximate We may consider a reasonable offer on some of our opals. If you’d like to do so please send thru the enquiry...
$3,200.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 15.9 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 15.9 caratsDimensions: 26x17.5x5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$2,000.00 $1,800.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 12.3 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 12.3 caratsDimensions: 19x14x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,800.00 $1,620.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 13.9 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 13.9 caratsDimensions: 25.5x16x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,750.00 $1,575.00
Sale
Large Boulder Opal Specimen 145 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 58x35x9 mmWeight : 145 CaratsSource : Yowah , Queensland, AustraliaSize and weight are approximate
$1,600.00 $1,440.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 10.7 ct
This opals face is undulated / not flatNatural Solid Untreated Australian Boulder Opal Polished StoneWeight: 10.7 caratsDimensions: 22.5x13.8x4.6mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,500.00 $1,350.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 8 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 8 caratsDimensions: 23x16x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,200.00 $1,080.00
Sale
Oval Shape Boulder Opal 6.85 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 12.5×10.5×5 mmWeight : 6.85 ctSource : Winton, QLD, AustraliaSize and weight are approximate
$1,200.00 $1,080.00
Sale
Blue Purple Wood Fossil Boulder Opal 20.6 ct
Natural Solid Untreated Australian Wood Fossil Boulder Opal Polished StoneWeight: 20.6 ctDimensions: 25x21x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,000.00 $900.00
Sale
Rainbow Wood Fossil Winton Boulder Opal 6.4 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 6.4 caratsDimensions: 31x6x3.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$920.00 $828.00
Sale
Blue Green Ocean Reef Teardrop Boulder Opal 15.7 ct
Natural Solid Untreated Australian Boulder OpalWeight: 15.7 ctDimensions: 28x11x5mmSource: Winton, QLD, AustraliaSize and weight are approximateNote: This opal has minor fracture but still very stable.  
$1,500.00 $750.00
Sale
Bright Blue Green Yowah Nut Boulder opal 52.7 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight : 52.7 ctDimension : 24x22x12mmSource : Yowah, Queensland, AustraliaSize and weight are approximate
$800.00 $720.00
Sale
Purple Australian Boulder Opal 25.5 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 25.5 caratsDimensions: 30X23X6.5 mmSource: Winton, QLD, Australia(Size and weight are approximate)
$650.00 $585.00
Sale
Deep Blue Ocean Winton Boulder Opal 28.4 ct
This freeform boulder opal could make a stunning, large style ring or pendant Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 28.4 caratsDimensions: 32x26x8mmSource: Winton, QLD, AustraliaItem code : SS245Size and weight are approximate
$568.00 $511.20
Sale
Dragons skin Boulder Opal Specimen 99 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 99 caratsDimensions: 42x27x12.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$550.00 $495.00
Sale
Ocean Blue Green Australian Boulder Opal 5.35 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 5.35 caratsDimensions: 15.5×11.5×3.5 mmSource: Winton, QLD, Australia(Size and weight are approximate)
$500.00 $450.00
Sale
Large Surf Board Ocean Boulder Opal 29 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 29 caratsDimensions: 44x13x5.5mmSource: Winton, QLD, AustraliaItem code : XX166Size and weight are approximate
$500.00 $450.00
Sale
Phenomenal Purple Dark Ironstone Boulder Opal 41 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 41 caratsDimensions: 42x21x5.5mmSource: Winton, QLD, AustraliaItem code : XX151Size and weight are approximate
$435.00 $391.50
Sale
Neon Green Flash Winton Boulder Opal 8.15 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 8.15caratsDimensions: 22x9x4mmSource: Winton, QLD, AustraliaItem code : SS290Size and weight are approximate
$425.00 $382.50
Blue Green Oval Boulder Opal Pair 5.2 ctw
Natural Solid Untreated Australian Boulder Opal Polished StonesTotal Weight: 5.2 ctDimensions: 11x7x3.5mm eachSource: Winton, QLD, AustraliaSize and weight are approximate
$380.00
Sale
New
Blue Green Flash Oval Shape Boulder Opal 2.6 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 2.6 caratsDimensions: 11x8.5x3mmSource: Winton, QLD, AustraliaSize and weight are approximate
$420.00 $378.00
Sale
Turquoise Green Shimmer Boulder Opal 14 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 14 caratsDimensions: 24x15x4.5 mmSource: Winton, QLD, AustraliaSize and weight are approximate
$400.00 $360.00
Sale
Boulder Opal Teardrop shape 11.45 ct
Weight: 11.45 ctDimensions: 24x10x4.5mmSource: Winton, QLD, AustraliaSize and weight are approximateNOTE: This opal has minor fracture but still very stable.
$390.00 $351.00
Sale
Blue Green Australian Boulder Opal 17.3 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 17.3 caratsDimensions: 23x16x6 mmSource: Winton, QLD, Australia(Size and weight are approximate)
$380.00 $342.00
Sale
6 pcs Wood Fossil Boulder Opal Parcel 25.2 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Weight: 25.2 ctBiggest Opal Dimensions: 15x10x4 mmSmallest Opal dimensions : 6x5x2 mmSource: Jundah, QLD, Australia(Size and weight are approximate)
$375.00 $337.50
Sale
Blue Green Deep Ocean Australian Boulder Opal 11.7 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 11.7 caratsDimensions: 22x14x5mmSource: Winton, QLD, Australia(Size and weight are approximate)
$350.00 $315.00
Sale
Sparkling Rainbow Wood Fossil Boulder Opal 28.6 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 28.6 ctDimensions: 31x18x8.5Source: Jundah, QLD, Australia(Size and weight are approximate)
$350.00 $315.00
Sale
Australian Boulder Opal 11 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 11 caratsDimensions: 19×10.5×7.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$325.00 $292.50
Sale
Green Purple Flash Boulder Opal 12.5 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 12.5 caratsDimensions: 17x16x6mmSource: Winton, QLD, AustraliaSize and weight are approximate
$325.00 $292.50
Sale
3 pcs Wood Fossil Boulder Opal Parcel 25.5 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Weight: 25.5 ctBiggest Opal Dimensions: 23x15x5 mmSmallest Opal dimensions : 17x10x4Source: Jundah, QLD, Australia(Size and weight are approximate)
$300.00 $270.00
Sale
Neon Green Oval Boulder Opal 4 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimensions: 15x8x4 mmWeight: 4 caratsSource : Winton, Queensland, AustraliaSize and weight are approximate
$300.00 $270.00
Sale
Deep Purple Blue with Green Sparkle Australian Boulder Opal 10.2 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 57.1 ctDimensions: 29x24x9 mmSource: Yowah, QLD, Australia(Size and weight are approximate)
$295.00 $265.50
Sale
Double sided Rainbow Flash Wood Fossil Boulder Opal TearDrop shape 13.2 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 13.2 ctDimensions: 23×13.5×7 mmSource: Jundah, QLD, Australia(Size and weight are approximate)
$290.00 $261.00
Sale
Blue Purple Boulder Opal 21 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 21 caratsDimensions: 30x17x5.5mmSource: Winton, QLD, AustraliaItem code : XX156Size and weight are approximate
$285.00 $256.50
Sale
Australian Boulder Opal 32 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 32 ctDimensions: 25x19x9mmSource: Koroit, QLD, Australia(Size and weight are approximate)
$275.00 $247.50
Sale
Electric Flash Australian Wood Fossil Boulder Opal loose stone 17.25 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 17.25 ctDimensions: 17.5x15x6mmSource: Jundah, QLD, Australia(Size and weight are approximate)
$265.00 $238.50
Sale
Blue Green Fairy Australian Boulder Opal Ringstone 20 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 20 caratsDimensions: 26x16x5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$260.00 $234.00
Sale
4 Pcs Matrix Boulder Opal Parcel 21.6 ctw
Natural Solid Untreated Australian Boulder Opal Polished Stone ParcelDimensions (mm) See ruler in imageTotal Opal Weight 21.6 caratSource: QLD, AustraliaItem code : SS19Some Opals have Undulation and Concave shape(Size and weight are approximate)
$250.00 $225.00
Sale
Gem Rainbow Flash Wood Fossil Boulder Opal 5.3 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 5.3 ctDimensions: 14×8.5x5mmSource: Jundah, QLD, Australia(Size and weight are approximate)
$250.00 $225.00
Sale
Multi color Boulder Opal 27 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 27 caratsDimensions: 35x17x7mmSource: Winton, QLD, AustraliaSize and weight are approximate
$250.00 $225.00
Sale
Green Australian Boulder Opal 13.3 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 13.3 caratsDimensions: 24x13x6 mmSource: Winton, QLD, Australia(Size and weight are approximate)
$265.00 $220.00
Sale
Stripes Australian Boulder Opal 10 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 10 caratsDimensions: 21x13x5 mmSource: Winton, QLD, Australia(Size and weight are approximate)
$230.00 $207.00
Sale
Purple Boulder Opal 39.5 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 39.5 caratsDimensions: 53x12x7mmSource: Winton, QLD, AustraliaSize and weight are approximate
$230.00 $207.00
Sale
Neon Blue Purple Australian Boulder Opal 18.3 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 18.3 caratsDimensions: 27.5x16x6mmSource: Winton, QLD, Australia(Size and weight are approximate)
$250.00 $200.00
Sale
Blue Green Australian Boulder Opal 6.8 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 6.8 caratsDimensions: 26.5×8.5×4.5mmSource: Winton, QLD, Australia(Size and weight are approximate)
$250.00 $200.00

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