Phosgenite

Monteponi Mine, Iglesias, Sud Sardegna Province, Sardinia/Sardegna  Italy

Specimen size: 13.2 × 9.1 × 1.9 cm = 5.20” × 3.58” × 0.75”
Main crystal size: 2.8 × 1.4 cm = 1.10” × 0.55”