Gahnite-Spinel Series, Spinel
Donna Angelica Valley, Tiriolo, Catanzaro Province, Calabria, Italy
7.3 x 5.7 x 3.0 cm. Gahnite is a member of the Spinel Group but this is probably a zinc-rich spinel. Lustrous, sharp, black octahedrons to 7 mm are scattered among rich pods of sharp to euhedral, bluish-green crystals to 6 mm on all sides of the marble matrix wedge. Specimens from this locale are rarely available. Ex. Giancarlo Fioravanti ...
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