Description: Recently unusual bluish Prehnite appeared together with the tanzanites: Zoisite var tanzanite and Prehnite Merelani Hills, Lelatema Mountains, Arusha, Tanzania Specimen size: 3.6 × 1 × 1.2 cm Main crystal size: 3.6 × 1.2 cm Mined in 2010 Photo: Reference Specimens

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