Trapiche emerald

TRAPICHE EMERALD
Trapiche emeralds are rare, valuable emeralds that have a black, six-rayed star within them, caused by black carbon impurities (the star is not an asterism).

Trapiche Emerald
Trapiche Emerald is a rare type of emerald that is black in color and has a six-rayed star. They are found in Columbia, South America.
Trembler
Trembler is an ornament that is attached to a piece of jewelry by a spring.

Trapiche Emerald
Often found in the mines of Columbia, these are the only Emeralds with a naturally occurring star effect.

Trapiche emeralds
Another gemstone rarity is trapiche emerald; this is a very unusual combination of a feldspar mineral, albite, that forms intergrown with emerald.

Trapiche emeralds are an extremely unusual, rare, prized form of emerald only found in the Muzo mining district of Colombia. Star-shaped rays that emanate from its center in a hexagonal pattern characterize these emeralds.

Fall 1964, Trapiche Emeralds from Colombia, p. 210, 5pp.
Winter 1964, Chromeless emeralds from Brazil identified as emeralds by GIA, p. 244, 1p.
Spring 1965, Trapiche emeralds from Colombia, p. 265, 3pp.

Colombian emeralds are prized for their vivid green color which is reasonably pure. The rare Trapiche emeralds that have six rays emanating from the centre are also from Colombia.

[Rutile-hematite starburst in quartz, inclusion stained channels in Indonesian chalcedony, chiastolite: Andalusite crystal with carbon inclusions, trapiche emeralds--small emerald crystals outlined and adhering to each other due to carbon ...

Colombia is also famous for the Trapiche, a rare type of emerald that resembles a star, and has been found in the Muzo, Peña Blanca, Chivor and Cosquez mines. In the Trapiche emerald, inclusions of albite and quartz, among others, ...

The famous Colombian mines Muzo and Chivor have been a popular source of emeralds since the pre-Columbian times, almost 5 centuries ago, when the Spanish explorers first arrived on the American continent. The rare Trapiche emeralds that ...

But Colombia has yet more to offer: now and then the Colombian emerald mines throw up rarities such as Trapiche emeralds with their six rays emanating from the centre which resemble the spokes of a millwheel.

See also: Gemstone, Emerald, Crystal, Stone, Jewel