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The hyalite on this specimen may be "hidden" on the bottom
The heavy base is pyrite
The crystals are attached to a matrix of light-colored grainy rock
This is caused by natural etching just like trigons in diamonds
some with smoky-quartz coloration
Smoky quartz with hyalite on black tourmaline Picture jasper The hyalite on this specimenLocale: Erongo Mountain, Namibia Approx dimensions: 4. 25 x 3 x 2" Approx weight: 437g ** Loose piece on base Smoky quartz from the Erongo region is typically a quite dark brown black color, with lower clarity due to natural inclusions, and a flat surface luster caused by etching. This piece is a bit lighter than usual with some crystal faces glassy clear, providing a window inside. Erongo smoky grows sculptural angular points with nice striations
