The internal natural pocket area of the clam is replaced with stunning golden yellow calcite crystals that fluoresces and phosphorescence a bright yellow to a light green under short and long wave black (UV) light
which suggests the hunting strategy of contemporary lionesses
There is also some evidence suggesting human hunting pressure may have contributed to their decline
Phareodus fossils: adult specimens usually found alone
orthopyroxene exsolution lamella (Fs34
Large Zebra Stone Cabochon | Australia Formation The internal natural pocket areaWeight: 56. 5g (282. 5ct) Approx. dimensions: 80mm x 61mm Zebra stone, or zebra rock, is a distinctive reddish brown and white banded sedimentary rock from the Kimberley region in Western Australia. Composed essentially of tiny particles of quartz and sericite (fine grained white mica), zebra stone also contains minerals such as hematite, limonite, kaolinite, dickite, and alunite. Zebra stone is estimated to have formed over 600 million years ago,