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30.2Cts Clam Shell Opalized Fossil FO-3257 fossil opals

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Details
SKU
FO-3257
Dimensions (mm)
25.3 x 21.7 x 12mm
Weight (cts)
30.2
Type
Specimen, Polished
Shape
Freeform
Colours
Description

CLAM SHELL OPALIZED

COOBER PEDY, AUSTRALIA


NATURAL SHELL

OPALIZED FOSSIL

BEAUTIFUL COLOURS

An opalised clam shell is a fossilized clam shell that has been replaced or filled with precious opal, typically found in Australia. This rare natural phenomenon combines paleontology and gemology, making such specimens both scientifically significant and visually stunning.

Key Features:

  • Material: The original shell is preserved in silica, and over time, this silica becomes opal.

  • Location: Most commonly found in Lightning Ridge, Coober Pedy, and White Cliffs, Australia.

  • Color: May display vibrant play-of-color (iridescent rainbow-like hues), especially in precious opal forms.

  • Age: Often around 100 million years old, dating back to the Cretaceous period.

Why They're Valuable:

  • Scientific value: They preserve details of ancient marine life.

  • Aesthetic value: Iridescent, colorful opal makes them highly sought after by collectors and jewelers.

  • Rarity: Opalized fossils are extremely rare, especially complete or colorful ones.

TRADING AS - TRUEBLUEOPALS PTY LTD / LIGHTNINGOPALS LLC

Shipping
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Standard Shipping - Tracked
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FedEx
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DHL
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30.2Cts Clam Shell Opalized Fossil FO-3257 fossil opals
Qld, Australia
Owned by fossil opals
Recent Feedback
  • ntasky87
    ntasky87
    Positive

    Love this little fossil! The colours really pop and is so much better in person!! Thank you.

  • bagheera
    bagheera
    Positive

    Gorgeous piece quick delivery

Audit

The Opal Sheriff program allows our members to request an audit on any product, which is completed by an independent Gemologist who assesses the accuracy of the item description and pictures.

Shipping Details

Costs:
Transit:
14 days via Standard Shipping - Tracked
Ships from:
Australia

Payment Options

  • stripe

Overview

Listing Type : Standard
Product ID : 1633886
Starts : 3rd December 2025 08:12 pm PST
* All prices are in USD

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