Prehnite, Zoisite v. Tanzanite - image 1

Prehnite, Zoisite v. Tanzanite

$2,250.00

VisaMastercardAmerican ExpressPayPalPayPal Pay In 4Discover·
  • Free shipping
  • Seller offers an extended return window of up to 30 days
  • USAShips from USA

C

Collector’s EdgeFeatured
753 for sale·296 sold
While this locality is world famous for Tanzanite, the Merelani Hills of Tanzania are also host to a variety of other gorgeous and colorful minerals. One of the most uncommon are these fantastic soft blue tabular prehnite crystals, which rank amongst my personal favorite to come from this area. While the yellow/green prehnite is commonly seen here, these blue examples are getting harder and harder to find. One of this size is increasingly rare. Also notable is a tanzanite association, which makes up the entire lower right section of the specimen, as pictured. A very very nice example for this rare style of prehnite.

Product details

Species
Prehnite, Zoisite, TanzaniteAbout Prehnite →
SizeSmall Cabinet
Dimensions3.5 x 6.0 x 6.0 cm
Listed on09/25/2025
Locality
Tanzania, Manyara Region, Merelani HillsRegional guide →
SKU76867

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.