Fluorite

St Peter's Mine, Sparty Lea, East Allendale, North Pennines, Northumberland  United Kingdom

Specimen size: 20.2 × 15 × 7.4 cm = 7.95” × 5.91” × 2.91”
Main crystal size: 4.8 × 3.7 cm = 1.89” × 1.46”