A really nice complete sponge from the famous Horn Park Quarry which sadly closed its operations over 18 years ago and any collecting since has been banned. This specimen was collected over 20 years ago. Craterospongia's are very rare to obtain these days and that is why they are so sought after. Approximately 175 million years old.
These solid calcite Bivalves are highly sought after by collectors and interior designers worldwide. This bivalve has been prepared and not polished and so it stays natural looking on the matrix. The quarries where these beautiful shells are collected have long since been filled in. The shell has been preserved in different shades of Green and Yellow calcite. Approximately 200 million years old. The matrix has a cut base for ease of display. Prepared by Andy Cowap.
A great amount of time and patience has been taken to remove this extremely fine example of this particular sponge from its surrounding rock. The specimen is totally matrix free and is of museum quality. It is excessively rare to get one as good as this.
