PINK FIRE QUARTZ WITH INCLUSIONS
Pink Fire Quartz has tiny oriented inclusions of covellite crystals,
a rare copper sulfide (CuS). It was first shown at the Tucson Gem Show
in 2005. This quartz has a superb purple schiller effect due to tiny hexagonal
inclusions of covellite. The inclusions grow all parallel to one another
and it turned out that they are micron-thick covelline crystals, up to
about 1 mm in diameter.
Pink Fire is possibly the rarest and more exciting between the quartz
gemstones. The amazing pink shine is visible just from few angles because
the covellite crystals are iso-oriented in a epitactic growth over a phantom
face of the quartz crystal. The phenomenon is similar to the shiller effect
of sunstone, but has been proposed as a new optical effect.
The material reputedly comes from vicinity of Ibatiba in Espirito Santo
State in Brazil, and except of covellite it contains also red strongly
elongated hematite crystals (“beetle-legs”). There is some secret about
the exact deposit that lies in a private land and is extracted and cut
in limited amount only by the land owner.