Aquamarine (Beryl) on Feldspar (Microcline) - Specimen fossil crinoid Chemical Composition: (CaCO3) (MgCO3)

Chemical Composition: (CaCO3) (MgCO3)

Geological Age:  195–175 mya

Description: Sericho

It is a gemstone variety of chalcedony (a cryptocrystalline form of silica) which contains small quantities of nickel

Aquamarine (Beryl) on Feldspar (Microcline) - Specimen fossil crinoid Chemical Composition: (CaCO3) (MgCO3)Mined from: Shigar Valley, Skardu District, Gilgit Baltistan, Pakistan Description: This specimen features pale blue aquamarine crystals emerging from a dense matrix of off white feldspar, most likely microcline. The aquamarine crystals show classic hexagonal prismatic growth, with slightly frosted faces and a soft translucency that gives them a muted, icy blue tone. They are partially embedded and scattered across the surface, creating a natural