Fluorite

Heights Quarry, Westgate, Weardale, North Pennines Orefield, County Durham  United Kingdom

Specimen size: 3.4 × 3.1 × 2.6 cm = 1.34” × 1.22” × 1.02”
Main crystal size: 1.5 × 1.3 cm = 0.59” × 0.51”