Opal Fossils
 
Opals are one of the few gemstones that can form fossils due to the fact that opals are form from silica and water not from cooling lava like other gemstones, which basically makes opal gemstone a sedimentary rock.
 
Fossilized opals are seeked out mostly by collectors as this fossil does not add much to the scientific world besides its beauty and uniqueness.
 
Opal fossils are usually sea shells and wood, but sometimes squid or benemites are found, called Pipe Opals. Pipe opals like "the Virgin Rainbow" are a wonderful to behold.
53ct Virgin Valley Opal Limb Cast! Nevada

53ct Virgin Valley Opal Limb Cast! Nevada

$19.99 6h 5m
25ct Virgin Valley Opal Limb Cast! Nevada

25ct Virgin Valley Opal Limb Cast! Nevada

$30.00 8h 4m
Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

- $19.98 23h 34m
Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

- $19.98 23h 34m
Amazing 40.5ct Virgin Valley Opal Limb Cast! Nevada

Amazing 40.5ct Virgin Valley Opal Limb Cast! Nevada

$600.00 1d 12h 28m
Set 10 Fossil ~ OPAL SHELLS ~ Lightning Ridge

Set 10 Fossil ~ OPAL SHELLS ~ Lightning Ridge

1 $24.00 2d 32m
~ OPAL BELEMNITES ~  set 3  Coober Pedy,  Australia

~ OPAL BELEMNITES ~ set 3 Coober Pedy, Australia

- $39.00 2d 32m
Petrified opal  rough 1.9 lb

Petrified opal rough 1.9 lb

-
$5.99
$9.99
2d 2h 58m
TEXAS SPRINGS,  NV - PINK OPAL PETRIFIED PALM WOOD SLAB - 99% ROUND

TEXAS SPRINGS, NV - PINK OPAL PETRIFIED PALM WOOD SLAB - 99% ROUND

- $5.15 2d 5h 51m
FOSSILISED OPAL SHELL SPECIMEN COOPER PEDY AUSTRALIA

FOSSILISED OPAL SHELL SPECIMEN COOPER PEDY AUSTRALIA

$300.00 2d 15h 16m
~ BLACK OPAL FOSSIL WOOD ~ parcel,  Lightning Ridge Australia

~ BLACK OPAL FOSSIL WOOD ~ parcel, Lightning Ridge Australia

- $24.00 2d 20h 50m
Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

Ammonite Ammolite Crystal Gem Mineral Fossil Opal Madagascar Irridescent Suture

- $19.98 2d 21h 47m
Over 900 Karats of Raw Virgin Valley Opals

Over 900 Karats of Raw Virgin Valley Opals

-
$0.99
$199.00
3d 1h 13m
BUTW fossil shark tooth inalid opal lapidary 4149B

BUTW fossil shark tooth inalid opal lapidary 4149B

$24.99 3d 3h 7m
BUTW fossil shark tooth inalid opal lapidary 4147B

BUTW fossil shark tooth inalid opal lapidary 4147B

$24.99 3d 3h 7m
BUTW fossil shark tooth inalid opal lapidary 4154B

BUTW fossil shark tooth inalid opal lapidary 4154B

$64.99 3d 3h 9m
BUTW fossil shark tooth inalid opal lapidary 4154B

BUTW fossil shark tooth inalid opal lapidary 4154B

$79.99 3d 3h 10m
BUTW fossil shark tooth inalid opal lapidary 4153B

BUTW fossil shark tooth inalid opal lapidary 4153B

$79.99 3d 3h 12m
FIERY OPAL FOSSIL CLAM from AUSTRALIA 72ct VERY BRIGHT MULTI-COLORS

FIERY OPAL FOSSIL CLAM from AUSTRALIA 72ct VERY BRIGHT MULTI-COLORS

- $49.99 3d 20h 10m
EXCEPTIONAL 86.20ct COOBER PEDY FOSSILIZED OPAL CLAM

EXCEPTIONAL 86.20ct COOBER PEDY FOSSILIZED OPAL CLAM

$1,350.00 5d 4h 38m