Pastel blue to sky blue Schmiederite on this very rare specimen, from the Lead vein outcrop in the Greystone Quarry, Lezant, Cornwall. Tiny crystals of Schmiederite richly cover areas to 1cm x 1cm on the Quartz veinstone. Rare crystals of Leadhillite are also covered by the Schmiederite. The specimen was probably collected in the 1990s.