Fluorite

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

Specimen size: 8 × 7.9 × 2.9 cm = 3.15” × 3.11” × 1.14”
Main crystal size: 1.6 × 1.4 cm = 0.63” × 0.55”