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Opal replacement of Clam Fossil
Opal replacement of Clam Fossil
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Opal replacement of Clam Fossil (Ref: JWL24-25)

Coober Pedy, Central North, South Australia, Australia
30mm x 30mm x 20mm
$950
This is a Opal replacement of Clam Fossil from Coober Pedy, Central North, South Australia, Australia. A very representative, interesting example of the phenomenon where opal replaced a fossil clam/bivalve shell, leaving us with a specimen of fossil made out of opal!
Data last checked on 19th Aug 2025
From: The Arkenstone
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See Also

Opal Replacing Bivalve fossil / 22.90 grams / Coober Pedy, Australia
Coober Pedy, Central North, South Australia, Australia
$1074
37mm x 26mm x 22mm
From: Mineral Classics
Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
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Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
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10mm x 10mm
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Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
$1010
20mm x 10mm
From: The Arkenstone
Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
$880
20mm x 10mm
From: The Arkenstone
Opal replacement of Clam Fossil
Coober Pedy, Central North, South Australia, Australia
$1850
30mm x 10mm
From: The Arkenstone
Hyalite Opal (fluorescent)
Electric Opal Claim, Zacatecas, Mexico
$950
70mm x 70mm x 20mm
From: The Arkenstone
Bixbyite and Hyalite Opal (Fluorescent)
Solar Wind Claim, Thomas Range, Juab Co. Utah
$900
40mm x 30mm x 20mm
From: The Arkenstone
Opal resinite.
Saint-Pierre-Eynac, Haute-Loire, France.
$931 *
160mm x 101mm x 47mm
From: A Bijoux
Opal Hyalite (Var: Opal-AN).
San Luis Potosí, Mexico
$1101 *
65mm x 54mm x 31mm
From: A Bijoux
Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
$1200
10mm x 10mm x 10mm
From: The Arkenstone
Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
$700
10mm x 10mm
From: The Arkenstone
Opal Hyalite (Var: Opal-AN).
San Luis Potosí, Mexico
$1152 *
50mm x 43mm x 33mm
From: A Bijoux
Opal
Tsehay Mewcha, Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopia
$660
10mm x 10mm
From: The Arkenstone
Opal
Gunheath China Clay Pit | Stenalees | Treverbyn | Cornwall | England
$855 *
65mm x 51mm x 40mm
From: Wendel Minerals
* price is an approximate conversion and may not be accurate.

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