Cassiterite

$1,250.00

$40.00 shipping
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Ships from USA

An ex-matrix, spectacular twinned Cassiterite crystal from the mines at Horn' Slavkov in the former Bohemia region of the Czech Republic. The Cassiterite twin measures a huge 4.2 x 2.8 x 3.0 cm and is jet-black with glassy-smooth mirror-like faces and sharp, perfectly defined edges. The re-entrant faces form a deep valley between the two crystals, with the outer faces displaying vertical furrows and striations. There is a little bruising on some of the edges and one termination, but in all cases, this is minor and requires magnification to note such defects. A conchoidal bruise has also been generated on one re-entrant face, although all such occurrences could be through natural damage while in-situ. A choice and showy twinned Cassiterite from the Czech Republic.