England Cotham Marble Stomatolite Designer Cut Cabochon

This England Cotham Marble Stomatolite cabochon has an astounding landscape scene in shades of tans and creams. This would make a truly incredible piece of jewelry or would make a fine addition for any collector.

England Cotham Marble Stomatolite Designer Cut Cabochon
46.4 x 25.9 x 7.8mm
74.93 cts.

I cut this cab by hand and it's been polished to a high polish both front and back with slightly rounded bottom edges for easy setting.

England Cotham Marble Stomatolite is actually a Rhaetian Stromatolitic Limestone rather that a true Marble. It was formed during the uppermost Triassic in south west England in the Prehistoric Mud Flats. Colonies of algae and worm-like organisms either bound the mud together (forming the layers) or burrowed into the high layer (forming the "trees"). It's known for it's layers and plumes creating landscape images. It is unique to this area and was named after Cotham Hou8se near Bristol, where it was first discovered in 1754.