20EBL27: Divergent growths of Prehnite crystals in two preferred directions, with perfect terminations, translucent, very lustrous, with an intense and uniform yellow color, and with a line of black Graphite crystals with a silky luster aligned on the upper face of one of the groups of Prehnite crystals and small remnants of whitish Calcite.
From a mine that is world-renowned for its tsavorites and tanzanites but which has also yielded several other mineral species, among them this aesthetic Prehnite, in addition to 3 type locality (TL) species.
Merelani Hills, Lelatema Mountains, Simanjiro District, Manyara Region  Tanzania

Specimen size: 5.9 × 4.2 × 2.8 cm = 2.32” × 1.65” × 1.10”