GB Gemstones found here: United Kingdom
3 deposits listed · 2 species catalogued
Known origins & mines
Blue John Cavern Castleton · fluorite
Blue John — banded purple-yellow fluorite mined under Treak Cliff since Romans; only ~500 kg remains yearly, carved into Ashford-i…
Cairngorm Mountains · smoky-quartz
"Cairngorm" became the generic name for brown smoky quartz from these Highland corries — set into sgian-dubh handles and Celtic br…
Rogerley Fluorite Mine · fluorite
English mine famous among collectors for green daylight/fluorescent purple fluorite twins — closed 2019 but specimens remain bench…