Specimens of any species from Cornwall, England are rare considering the centuries-old mining that took place there. "Gunnies" like this date back over 150 years, and large specimens, rich with color and crystals, are almost unheard of on the open market! On a quartz matrix are several shiny, neon green, composite crystals of torbernite, up to almost 3 cm across. The rarity, size and sparkle all add up to a stunning specimen of a historic and rare mineral for the locality.