Tisbury Starstone Freeform Cabochon | 5.8cm | UK Geode Petrified wood forms through permineralisation

Petrified wood forms through permineralisation

The surface displays metallic bronze to gold tones typical of pyrite

forming in association with the copper-bearing mineral deposits historically worked across the Cornish mining landscape

Location: Navidad Mine

Tisbury Starstone Freeform Cabochon | 5.8cm | UK Geode Petrified wood forms through permineralisationTisbury Starstone Freeform Cabochon 5. 8cm UK A truly unique piece of British natural history Tisbury Starstone is a fossilised coral found exclusively in the ancient soils of Tisbury, Wiltshire, formed approximately 145 million years ago during the Late Jurassic period when this part of England lay beneath a warm, shallow sea. The characteristic star like patterns visible on the surface are the preserved skeletal structures of coral polyps, their