Prehnite - image 1
Prehnite - image 2
specimen video

Prehnite

$1,500.00

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Crystal Classics
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Tucson, Arizona, USA
7,543 for sale·132 sold
Deep lemon yellow spheroidal crystal aggregates of Prehnite richly encrust a lustrous Quartz matrix. This beautiful translucent Prehnite is from the Merelani Hills in the Manyara Region of Tanzania and forms elongated spherical clusters to over 2 cm across with a superb glassy lustre. The accompanying video shows this specimen in white LED light and ultraviolet light. The fluorescence is ghostly, with pale ghoulish greens and ethereal whites, the latter intensifying in later generation Prehnite prism with a more hexagonal habit. This is a lovely example of Prehnite from the Tanzanite gem mines, one of outstanding colour and a real eye-catcher.

Product details

Species
Prehnite, QuartzAbout Prehnite →
SizeSmall Cabinet
Dimensions5.5 x 7.0 x 4.5 cm
Listed on10/24/2024
Locality
Tanzania, Manyara Region, Merelani HillsRegional guide →
SKUCC20145

Learn more

Prehnite
Mineral guide
Learn about Prehnite
apple- to mint-green crystals and sculptural botryoidal/rosette forms; a calcium aluminum silicate formed in low-temp hydrothermal environments.
Prehnite
Regional guide
Prehnite from Merelani Hills, Tanzania
Merelani Hills prehnite is one of the surprises of a locality that collectors first learned to revere for tanzanite. In hand specimen it is immediately recognizable: glassy yellow-green to lemon-yellow clusters, bright mint-green blades, and occasional blue to celestine-blue rosettes, commonly sharpened by the dark metallic contrast of graphite. The best examples have the translucency and internal glow of gem material, but with the crystallographic interest of discrete tabular, blocky, bladed, or rosette crystals rather than the more familiar botryoidal prehnite seen from many classic basalt localities.