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Black Opals Gemma AI Opal 101
Estimated RRP

RARE Opalised Cretaceous Belemnite and Shell Specimen SLAB!

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3 watching
Details
SKU
Dimensions (mm)
200 x 120 x 50mm
Weight (cts)
2855
Type
Rough, Polished, Specimen
Colours
Description

We are a family company who love opal and have loved sharing its beauty with the world for over 40 years of combined experience in opal mining, jewellery manufacture and online sales.

This specimen was mined by our company on the Dead Horse Gully opal field.

Watch to see us opal mining in our Coober Pedy claims :

https://youtu.be/JzBoy-vjmgw?si=VCG8pH0dNIYG06HU

Item Specifics:

WEIGHT: 571 grams.

DIMENSIONS: See ruler for size guide, (in inches).

BRIGHTNESS: Stunning 4 of 5 green orange red crystal opal throughout the belemnite and shells.

The belemnite has been removed from it's original host rock, epoxied and polished then set back into the host rock while the shells are genuine 'in situ' fossils and have been partly polished as well as been coated in 330 epoxy to aid in fire display and stability of the overall piece. It is however already quite strong and will be very heavily bubble wrapped upon shipping.

We do not sell opal simulants of ANY sort. All of our opal is 100% guaranteed Natural Australian Opal.

The color variations in the photos are due to different light angles, distances and backgrounds.

All of our auctions are photographed with macro settings under a 60 watt incandescent lamp.

We try to create a true as possible representation of the stones you will receive.

Please check the dimensions carefully as the opal will not be as big in your hand as it looks on your monitor!

Also some monitor settings will cause white based opal to look darker than it actually is. Please check the description carefully before bidding and view your opal in sunlight or in a dark room with a direct light source ie: desk lamp, down light etc. (As photographed and practiced throughout the opal industry).

Shipping
Shipping provider Shipping to Australia Shipping to rest of world Combined Shipping (Australia) Combined Shipping (rest of the world)
Standard Shipping - Tracked
/ 7 days
/ 21 days
Not available Not available
DHL
/ 2 days
/ 4 days
Not available Not available
Express Shipping
/ 2 days
/ 7 days
Not available Not available
Registered Shipping
/ 7 days
/ 21 days
Not available Not available
Store
RARE Opalised Cretaceous Belemnite and Shell Specimen SLAB!
String:sa, Australia
Owned by graceopal
Recent Feedback
  • ntasky87
    ntasky87
    Positive

    Paid and shipped - no feedback left after 100 days

  • ntasky87
    ntasky87
    Positive

    Paid and shipped - no feedback left after 100 days

  • go2wicky
    go2wicky
    Positive

    Paid and shipped - no feedback left after 100 days

  • jonie
    jonie
    Positive

    Lovely colourful good size crystal. Thank you.

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:
7 days via Express Shipping
Ships from:
Australia

Payment Options

  • paypal

Overview

Listing Type : Standard
Product ID : 1621414
Starts : 14th February 2026 11:46 pm PST
* All prices are in USD

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