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The volcanic rocks that produced Alashan Agates are primarily associated with volcanic activity during the Mesozoic Era
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“At a Glance” Spec Sheet:
with altered amphibole fibers (originally crocidolite) contributing to its structure and optical effects
Dark Green Cap Stak Nala Tourmaline and Cleavelandite – Haramosh Mountains, Pakistan | Thumbnail Specimen Arusha sunstone The volcanic rocks that producedClassic Stak Nala tourmaline crystal perched on snowy white cleavelandite, on original host rock matrix. This striking specimen features a dark green tourmaline crystal from the world famous Stak Nala locality, standing proudly on a bed of snowy white cleavelandite, all resting on its original host rock matrix. The tourmaline shows the classic Stak Nala look: rich, deep green color, glassy luster, and visible crystal striations along the prism faces.
