This Specimen has been sold.
3.8" Polished, Free-Standing Dumortierite With Quartz - Madagascar
This is a 3.8" tall, polished piece of fibrous, blue dumortierite within quartz. Under magnification, the small fibrous dumortierite crystal aggregations can be seen in great detail within the quartz. The base of the stone has been cut flat so that it displays nicely on a hard surface. In addition to being polished it has also been coated in an epoxy sealant
Dumortierite from Madagascar is typically found in massive form or as inclusions within quartz. When in quartz, it can be identified as blue, prismatic inclusions that are often mistaken for lazurite or lazulite, both of which don't form as fibrous aggregates. Much of the dumortierite from Madagascar that's seen on the market is included within massive quartz and associated with small pyrite crystals.
Dumortierite, Quartz & Pyrite
3.8" tall, 2.6" wide, 1.6" deep