Results in Natural Loose Boulder Opals

1-25 of 236

  • 37.5 ct Queensland boulder opal - 3 full face gems (1 is drilled)

    37.5 ct Queensland boulder opal - 3 full face gems (1 is drilled)

    Here's a nice parcel of 3 Australian boulder full face opals from Queensland - colours are blue purple green with a creamy brown opal potch above the ironstone matrix. A delightful little collection of full face boulder opal gems.
    AU $19.99
    0 bids
    or Buy It Now
    Ending Today at 18:23 AEDST
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  • 3.0ct solid Queensland boulder opal - high polish 'blues' ring stone :)

    3.0ct solid Queensland boulder opal - high polish 'blues' ring stone :)

    Got the "blues"?. This little "almost full face" Queensland boulder opal could be just for you. Its size is 11 x 8 x 4.6 mm and it weighs 3.0 ct - it's got a solid ironstone matrix back - the ironstone helps to make boulder opal particularly durable.
    AU $19.99
    0 bids
    Ending Monday at 19:54 AEDST
  • REDUCED PRICE!COOBER PEDY FOSSIL OPAL BRILLIANT FIRE, just under 30 carat, VIDEO

    REDUCED PRICE!COOBER PEDY FOSSIL OPAL BRILLIANT FIRE, just under 30 carat, VIDEO

    Fossil Opal -Opal forms in cavities within rocks. If a cavity has formed because a bone, shell or pinecone was buried in the sand or clay that later became the rock, and conditions are right for opal formation, then the opal forms a fossil replica of the original object that was buried.
    AU $100.00
    AU $5.00 postage
  • 60 ct parcel of 3 Queensland boulder opals - 2 drilled

    60 ct parcel of 3 Queensland boulder opals - 2 drilled

    This is a delightful parcel of 3 Queensland boulder opals - all freeform cabs, with two of them drilled. these would make amazing pendants. The longest gem has bright green fire along its centre and two of the three are almost "full face" gems.
    AU $19.50
    0 bids
    Ending Wednesday at 18:08 AEDST
  • 2.6 ct Queensland Boulder Opal - freeform, "full face", polished cab

    2.6 ct Queensland Boulder Opal - freeform, "full face", polished cab

    This is a delightful, full face, Queensland boulder opal that has been polished - making the most of the fire. The colours are blue purple green. Australian opal is appreciating at well beyond bank even the best interest rates.
    AU $9.99
    0 bids
    Ending Tuesday at 16:00 AEDST
  • 2.3ct Quilpie Boulder Opal - freeform polished cab

    2.3ct Quilpie Boulder Opal - freeform polished cab

    This beautiful little freeform rectangular Quilpie boulder opal has been nicely polished - making the most of the fire. A little brown ironstone matrix is also visible. [All opal is best viewed in sunlight between 10am and 3pm with the sun shining over one's shoulder from behind.].
    AU $14.90
    0 bids
    Ending Today at 22:14 AEDST
  • 17.3 ct solid boulder opalized wood - bright blue green fire

    17.3 ct solid boulder opalized wood - bright blue green fire

    This is a lovely example of boulder opalized wood from Qld. Its size is 19 x 17 mm and it weighs 17.3 ct. Brightness is 3.9/5. The ironstone makes this type of opal extremely stable.
    AU $9.99
    0 bids
    Ending Tuesday at 10:22 AEDST
  • Queensland Boulder Opal 4.20ct Loose Australian Natural Stone

    Queensland Boulder Opal 4.20ct Loose Australian Natural Stone

    A free form shape Queensland boulder opal stone with crystal mutli colour and blue green colour bars down the stone some ironstone. Boulder opal is a type of opal that forms within the cavities of ironstone boulders dating from the time when central Queensland was cover by an inland sea The Opal is found in both vertical and horizontal cracks or seams.
    AU $65.00
    Free postage
  • 22.7ct Yowah Boulder Opal - freeform polished picture-stone cab

    22.7ct Yowah Boulder Opal - freeform polished picture-stone cab

    This delightful Yowah boulder opal freeform cab has been nicely polished. The colour is a gorgeous creamy brown with predominant flashes of green in this superb picture-stone. Australian opal is appreciating at well beyond bank even the best interest rates.
    AU $8.50
    0 bids
    Ending Tuesday at 15:46 AEDST
  • 2.6ct solid Queensland boulder opal - beautiful fire - excellent ring stone

    2.6ct solid Queensland boulder opal - beautiful fire - excellent ring stone

    This is a delightful little "full face" Queensland boulder opal - suitable for a ring stone - beautiful flashy blue greens. Its size is 11.4 x 8 x 3.7 mm and it weighs 2.6 ct - it's pear shaped with a solid ironstone matrix back - the ironstone helps to make boulder opal particularly durable.
    AU $19.99
    0 bids
    Ending Monday at 19:38 AEDST
  • 2.5ct solid Queensland boulder opal - beautiful fire - "full face"

    2.5ct solid Queensland boulder opal - beautiful fire - "full face"

    This is a delightful little "full face" Queensland boulder opal - suitable for a ring stone - beautiful blue greens with a splash of red pinfire. Its size is 10 x 6.6 x 5 mm and it weighs 2.5ct - it's a freeform with a solid ironstone matrix back - the ironstone helps to make boulder opal particularly durable.
    AU $9.99
    0 bids
    Ending Tuesday at 10:12 AEDST
  • 19.6ct Quilpie boulder opal - freeform teardrop

    19.6ct Quilpie boulder opal - freeform teardrop

    Here's your opportunity to own a large polished piece of Quilpie boulder opal - it would make a great pendant. Opal is our national gemstone - it's every Australian's patriotic duty to own at least one piece - but, hey, why stop at one piece?.
    AU $8.50
    0 bids
    Ending Saturday at 6:25 AEDST
  • 11.30cts Natural solid  boulder opal beatiful picture stone,multiple Gem fire

    11.30cts Natural solid boulder opal beatiful picture stone,multiple Gem fire

    Gorgeous natural solid boulder opal from QLD mining field Australia. This is a double sided picture stone. the opal was cut in Australia by myself with top professional polish.it is a beautiful picture stone with sparkling Multiple Gem colours.
    AU $9.99
    AU $5.00 postage
  • 16.5ct Winton Boulder Opal - freeform polished cab

    16.5ct Winton Boulder Opal - freeform polished cab

    This beautiful Winton boulder opal has been superbly polished - making the most of the fire. The colour is a gorgeous blue green with traces of pink. Brown ironstone matrix is also visible. Australian opal is appreciating at well beyond bank even the best interest rates.
    AU $19.00
    0 bids
    Ending Tuesday at 15:47 AEDST
  • Queensland Boulder Opal 35.19ct Loose Australian Natural Stone

    Queensland Boulder Opal 35.19ct Loose Australian Natural Stone

    A Large free form shape Queensland boulder opal picture stone with bright overall light Blue multi colour with bands of multi colours across the stone with green flashes and undulating polished surface small ironstone in the surface.
    AU $485.00
    Free postage
  • 3.3ct Quilpie Boulder Opal - freeform polished cab

    3.3ct Quilpie Boulder Opal - freeform polished cab

    This beautiful little Quilpie boulder opal has been nicely polished - making the most of the fire. The colour is a gorgeous, deep blue green. A little brown ironstone matrix is also visible. [All opal is best viewed in sunlight between 10am and 3pm with the sun shining over one's shoulder from behind.].
    AU $17.90
    0 bids
    Ending Saturday at 6:27 AEDST
  • OPAL ROUGH 400 GRAMS OF ROUGH BOULDER OPAL SPECIMEN

    OPAL ROUGH 400 GRAMS OF ROUGH BOULDER OPAL SPECIMEN

    OPAL ROUGH 400 GRAMS.
    AU $29.50
    Available for Best Offeror Best Offer
    Free postage
  • OPAL ROUGH 440 GRAMS OF ROUGH BOULDER OPAL SPECIMEN

    OPAL ROUGH 440 GRAMS OF ROUGH BOULDER OPAL SPECIMEN

    OPAL ROUGH 440 GRAMS.
    AU $29.50
    Available for Best Offeror Best Offer
    Free postage
  • 9.9ct full face Quilpie boulder opal - freeform

    9.9ct full face Quilpie boulder opal - freeform

    This is a superb Quilpie virtually full face boulder opal with bright, sparkling colours - predominantly blue green. One of the brightest pieces I've ever seen from this locality. Opal is our national gemstone - it's every Australian's patriotic duty to own at least one piece - but, hey, why stop at one piece?.
    AU $25.50
    0 bids
    Ending Tuesday at 22:20 AEDST
  • 2.7ct solid Queensland boulder opal - beautiful fire - almost full face

    2.7ct solid Queensland boulder opal - beautiful fire - almost full face

    This is a delightful little "almost full face" Queensland boulder opal - suitable for a ring stone - beautiful blue greens. Its size is 11 x 7 x 3 mm and it weighs 2.67ct - it's a freeform with a solid ironstone matrix back - the ironstone helps to make boulder opal particularly durable.
    AU $9.99
    1 bid
    Ending Tuesday at 10:07 AEDST
  • Boulder Doublet Opal with Red, Green & Blue Colours

    Boulder Doublet Opal with Red, Green & Blue Colours

    This natural Australian Opal displays lovely green, blue & red colours. Shows lovely green, blue & red colours. 2 carat Boulder Doublet Opal. Boulder Doublet Opal from Coober Pedy, SA, Australia.
    AU $155.00
    Available for Best Offeror Best Offer
    Free postage
  • Approx 10 Ct of High Grade Boulder Opal Chips (Coober Peby) In glass disp/bottle

    Approx 10 Ct of High Grade Boulder Opal Chips (Coober Peby) In glass disp/bottle

    AU $49.95
    AU $9.00 postage
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  •  Queensland Boulder Opal 6.36ct Loose Australian Natural Stone

    Queensland Boulder Opal 6.36ct Loose Australian Natural Stone

    Boulder opal is a type of opal that forms within the cavities of ironstone boulders dating from the time when central Queensland was cover by an inland sea The Opal is found in both vertical and horizontal cracks or seams.
    AU $35.00
    Free postage
  • AUSTRALIAN BOULDER OPAL UNISEX RING, SIZE O, 18ct GOLD and BLACK DIAMONDS

    AUSTRALIAN BOULDER OPAL UNISEX RING, SIZE O, 18ct GOLD and BLACK DIAMONDS

    The unisex ring is 18ct White gold and is set with 60 black diamonds. The opal size is 16 x 10.5 mm and is estimated as 4.3ct. The Boulder Opal is of outstanding quality and was selected for its stunning display of colours that range from yellow, green, blue to red.
    AU $15,350.00
    Available for Best Offeror Best Offer
  • 1 x Approx 37 Ct of Loose Boulder Opal Chips (Coober Peby) In glass disp/bottle

    1 x Approx 37 Ct of Loose Boulder Opal Chips (Coober Peby) In glass disp/bottle

    The glass dispaly bottles are 4cm high x 2.2cm wide. The bottles will vary form 35 - 40 Carats.
    AU $19.95
    AU $9.00 postage

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