-
Osumilite (rare) and Tridymite ex Fioravanti Coll.
- Funtanafigu Quarry, Marrubiu, Sardinia, Italy
- Cabinet, 8.4 x 6.4 x 3.3 cm
- Start Time: 03/10/2013 6:30:00 pm (CDT)
- End Time: 03/14/2013 6:30:05 pm (CDT)
- Auction Closed
Item Description
Osumilite is a rare complex silicate found in volcanic rocks. Lustrous, tabular, hexagonal, midnight-blue crystals to 4 mm are aesthetically scattered in the attractively vuggy rhyolite matrix lined with tan tridymite crystals. Tridymite is high-temperature quartz and is rare at this well-known Sardinian locale. This fine combination piece displays very well from either side. Ex Giancarlo Fioravanti Collection and acquired in Florence in 1978.