4.73 ct. Calcite
A lesson in
precision, you are unlikely to ever encounter a gem Calcite cut so carefully.
It is a custom cut and is certainly unique - a series of triangles defines the
outline and the crown. The polish is superb - the type of quality you
rarely see on a smaller gem like this. The stone is completely colorless
and shows the dramatic visible doubling of this type of 'optical' Calcite.