Gyrolite on Prehnite Crystal | 102 gr | Mumbai, India Belemnite from Madagascar

from Madagascar

Amethyst is a purple variety of quartz

8 mm / 3x3x2 inches

Size:  21 - 27 mm incl

it has size and presence showing a nice crust and patina from years of rest in the desert

Gyrolite on Prehnite Crystal | 102 gr | Mumbai, India Belemnite from MadagascarGyrolite often forms nodular aggregates that can appear glassy, dull or even fibrous. The aggregate nodules often accompany many fine and rare minerals such as Apophyllite and Okenite plus many of the Zeolites. Looks very nice on Prehnite! Prehnite can form prismatic, tabular, or pyramidal crystals, but usually occurs in botryoidal, reniform, stalactitic, granular, or compact habits. It is usually green in colour, but may be white, colourless, yellow,