with dimensions of 54x48x31 mm

It has dimensions of 22x20x7mm

Mont-Saint-Hilaire

It is metallic gray

and multicolored varieties

Prehnite and Graphite Cluster | Raw Prehnite | 4.5 grams | Tanzania Ametrine with dimensions of 54x48x31 mmPrehnite is a green to yellowish green colored mineral that belongs to the phyllosilicate family. It is composed of calcium, aluminum, and silicate, with traces of iron, magnesium, and other elements. Prehnite crystals have a unique pearly luster and can form in a variety of shapes, including tabular, prismatic, and stalactitic formations. Prehnite is believed to have a calming effect on the mind and emotions, promoting relaxation and inner peace. It