169ct 70mm MARSTON MARBLE cabochon

Item Information

Dimensions (mm) 70 x 48 x 8mm
Weight (carats) 169 carats
No Treatment


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Gem-A Corporate Member


This Marston Marble is exquisite - look at the detailing of the fossil markings.  A one and only of this quality - Museum grade!

Marston marble” is not actually a marble at all, but a conglomeration of tiny, rare ammonites (promicroceras martonensis and ziphoceras ammonites) from the Jurassic Period, approximately 200 million years old.

The white ammonite shells are largely intact, with brown calcite as a replacement mineral within the shells, all held together within a natural mudstone concretion.

This fascinating material was previously used to make grave markers in the local churchyard, but the location of the find was lost for many years, making it a holy grail to fossil hunters and collectors.

Discovered some ten years ago whilst prospecting the rivers around this famous locality this piece of highly fossiliferous stone was embedded in the banking, taken back and prepared. 

Healing Properties of Marston Marble: The spiral is perhaps the oldest human symbol and exists in virtually every culture from at least Neolithic times. The spiral shape of the ammonite shell is symbolic of the cycles of life, including life, death and rebirth, moon phases and the seasons, and also of resurrection in the Christian religion.

ABOUT ShangrilaGems

EDUCATION AND PROFESSIONAL MEMBERSHIP We are Corporate Members of the GEMMOLOGICAL ASSOCIATION OF GREAT BRITAIN and both the owners of ShangrilaGems hold an MSc.

KNOWLEDGE AND EXPERIENCE ShangrilaGems are an Anglo Indian company with many years experience in the gemstone industry.  Through our network of contacts we are able to source rare and interesting items.  We also gain advanced insight of new gemstone treatments which are invented all the time!

MANUFACTURING AND SHORT ROUTE TO MARKET We own a manufacturing outlet in Jaipur, India where we cut many of our stones – so the route to market is short and our stones are not only great quality but great value.  

ETHICAL MANUFACTURING Our gems are ethically manufactured with no children and good working conditions.

HIGH QUALITY GEMSTONE VERIFICATION  ShangrilaGems use the best quality gem identification and testing equipment to ensure authenticity. This includes a refractometer, Chelsea Filter, polariscope, 30 times magnification loupe and high quality microscope and digital measuring devices.  Our equipment is manufactured in Switzerland and Germany to the highest specification.

ALL TREATMENTS ARE STATED Many gem sellers don’t understand gem treatments or maybe know about them but do not disclose them.   This is not acceptable.  ShangrilaGems give clear indications of all treatments to our customers.

HONEST PHOTOS AND VIDEOS ShangrilaGems make huge investments in photographic and video equipment and spend a large amount of time to obtain the most realistic shots of our items. Our photos and videos are not enhanced in any way; dust spots aren’t even removed.  We will take photos of the items on different backgrounds to give you a true idea of what you are buying.

RETURNS Not happy with your item?  You have 14 days from delivery to return the item to us.  

FEEDBACK  Please, please leave feedback.  If you are not happy with your item please contact us prior to leaving feedback so we can discuss a return with you.

Please read our terms and conditions on our profile before bidding. Many thanks.

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Pricing & Details

Bid Increment $1
Starting Bid $1
Auction ID 678556
Watchers 27 watching
Viewed 936 times
Starts 2nd Jul 2017 5:30pm PDT
Ends 27th Aug 2017 5:30pm PDT

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