the.com/prehnite

the gemstone that healers wave around to predict the future, named after a Dutch colonel.

first namedearliest mineral named after a person, 1788
namesakeColonel von Prehn shipped it from South Africa
glowgrapelike green clusters resembling tiny botryoidal balloons
folklorecalled the prophecy stone by crystal believers
companyoften hosts needle-thin epidote crystals inside
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