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
Great Barrier Reef Blue Winton Boulder Opal 53 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 53 caratsDimensions: 35x22x10mmSource: 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...
$6,000.00
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
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
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
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
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
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
Gem Ocean Reef Boulder Opal 15.7 ct
Natural Solid Untreated Australian Boulder OpalWeight: 15.7 ctDimensions: 28x11x5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,500.00
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
3 pcs Stripe Boulder Opal Parcel 27.9 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Weight: 27.9 ct Dimensions: 14x11x5mm eachSource: Winton, QLD, AustraliaSize and weight are approximate
$1,200.00
Boulder Opal Specimen 286.30 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 71x50x9 mmWeight : 286.30 CaratsSource : Winton, Queensland, AustraliaSize and weight are approximateNote: This boulder opal has minor fractures but still beautiful piece.

$1,200.00
Rare Wood Fossil Boulder Opal 120.55 Ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimensions (mm) 36x35x12mmWeight (carats) 120.55 ctsRare Wood Fossil Boulder Opal StoneItem type : Natural Boulder OpalItem Code : MM189Source: Koroit, QLD, AustraliaSize and weight are approximate
$1,200.00
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
New
Rainbow Flash Oval Shape Boulder Opal 4 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 4 caratsDimensions: 14x7x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,000.00
Purple Wood Fossil Boulder Opal 20.6 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 20.6 ctDimensions: 25x21x4mmSource: Winton, QLD, AustraliaSize and weight are approximate
$1,000.00
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
Boulder Opal Teardrop shape 11.45 ct
Weight: 11.45 ctDimensions: 24x10x4.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$900.00
Green Pendant Size Boulder Opal 54.55 Carats
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 38x29x7 mmWeight : 54.55 CaratsItem type : Polished Natural Solid Boulder Opal StoneSource : Winton Queensland, AustraliaItem code : SS129Size and weight are approximate
$900.00
Wood Fossil Boulder Opal 113.85 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimensions (mm) 55x28x9 mmWeight (carats) 113.85 ctSource: Koroit, QLD, AustraliaSize and weight are approximate
$800.00
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
Purple Rectangle Shape Gem Boulder Opal 24 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 24 ctDimensions: 22×18.5×4.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$795.00
New
Rainbow Wood Fossil Winton Boulder Opal 4.9 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 4.9 caratsDimensions: 16x10x3.5mmSource: Winton, QLD, AustraliaSize and weight are approximate
$780.00
Rare Wood Fossil Boulder Opal 58.05 Ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimensions (mm) 32x22x12 mmWeight (carats) 58.05 ctsAmazing Rare Wood Fossil Koroit Boulder Opal Stone 
 Vegetation / wood fossil opals in this parcelItem type : Natural Boulder OpalItem Code : MM186Source: Koroit, QLD,...
$700.00
Electric Rainbow Flash Wood Fossil Boulder Opal 63.5 ct
Weight: 63.5 ctDimensions: 30x26x9mmSource: Jundah, QLD, Australia(Size and weight are approximate)
$685.00
Stripe Pattern Boulder Opal 87 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 87 ctDimensions: 52x22x10 mmSource: Koroit, QLD, Australia(Size and weight are approximate)
$650.00
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
3 pcs Purple Wood Fossil Boulder Opal Parcel22 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Weight: 22 ctSmallest 12x12x5mm Largest 15x13x7mmSource: Winton, QLD, AustraliaSize and weight are approximate
$590.00
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
Purple Boulder Opal 13.2 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 13.2 caratsDimensions: 24x14x5.5mmSource: Winton, QLD, AustraliaSize and weight are approximateThe dark ironstone is caused by high magnesium levels in a pocket of the time.
$560.00
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
6 pcs Boulder Opal Parcel 33.6 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Opal Weight: 33.6 caratsBiggest Opal Dimensions: 15x15x4 mmSmallest Opal Dimensions : 13x9x3 mmSource: QLD, AustraliaSize and weight are approximate
$530.00
Boulder Matrix Opal Pendant Stone 71 ct
Natural Solid Untreated Australian Pipe Crystal Boulder Opal Polished StoneWeight: 71ctDimensions: 50x18x10 mmSource: Koroit, QLD, Australia(Size and weight are approximate)
$525.00
Multi Color Flash Boulder Opal 29.35 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 29.35 caratsDimensions: 29x20x7mmSource: Winton, QLD, AustraliaSize and weight are approximate
$525.00
3D Effect Boulder Opal 24.7 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 24.7 caratsDimensions: 31x18x6.5mmSource: Winton, QLD, AustraliaItem code : SS240Size and weight are approximate
$525.00
Purple Green Blue Boulder Opal 10.7 Ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 28x11x5 mmWeight : 10.7 CaratsItem type : Polished Natural Solid Boulder Opal StoneSource : Winton Queensland, AustraliaItem code : SS152Size and weight are approximate
$525.00
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
Lilac Square Shape Australian Boulder Opal 61.5 Ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 61.5 caratsDimensions: 30x26x7mmSource: Winton, QLD, AustraliaSize and weight are approximate
$500.00
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
Stripe Boulder Opal 45.2 Ct
Natural Solid Untreated Australian Boulder Opal Polished StoneDimension : 26x25x9 mmWeight : 45.2 CaratsItem type : Polished Natural Solid Boulder Opal SpecimenSource : Winton, Queensland, AustraliaItem code : SS48Size and weight are approximate
$500.00
5 pcs Boulder Opal Parcel 19.9 ct
Total Opal Weight: 19.9 caratsBiggest Opal Dimensions: 19x8x4mmSmallest Opal Dimensions : 16x8x4 mmSource: QLD, AustraliaSize and weight are approximateNote: One opal has minor surface fracture. It is still very stable.
$495.00
4 pcs Green Pink Opal Parcel 19.89 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Opal Weight: 19.89 caratsBiggest Opal Dimensions: 21x8x5 mmSmallest Opal Dimensions : 17x8x4 mmSource: QLD, AustraliaSize and weight are approximateNote: One opal has minor surface fracture. It is still very stable.
$495.00
4 pcs Blue Boulder Opal Parcel 19.3 ctw
Natural Solid Untreated Boulder opal parcel from AustraliaTotal Opal Weight: 19.3 caratsBiggest Opal Dimensions: 21x10x4 mmSmallest Opal Dimensions :11x10x4 mmSource: QLD, AustraliaSize and weight are approximate
$450.00
6 pcs Boulder Opal Parcel 22.5 ctw
Natural Solid Untreated Australian Boulder Opal Polished StoneTotal Opal Weight: 22.5 caratsBiggest Opal Dimensions: 13x11x4 mmSmallest Opal Dimensions : 11x7x4 mmSource: QLD, AustraliaSize and weight are approximate
$450.00
New
Rainbow Teardrop Wood Fossil Winton Boulder Opal 2.8 ct
Natural Solid Untreated Australian Boulder Opal Polished StoneWeight: 2.8 caratsDimensions: 13.5x9x3mmSource: Winton, QLD, AustraliaSize and weight are approximate
$440.00
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

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