Fluorescent Blue Prehnite from Tanzania – 8.94 grams tremolite Oils/perfumes/dyes can ruin the opal

Oils/perfumes/dyes can ruin the opal

There are three terminations that all have a natural yellow tip

Measurements: 103mm x 55mm x 32mm

Measurements: 131mm x 77mm x 53mm

This amethyst cluster has a a couple nice larger terminated crystals and a couple smaller crystals that are grown into it

Fluorescent Blue Prehnite from Tanzania – 8.94 grams tremolite Oils/perfumes/dyes can ruin the opalUnique prehnite specimen displaying a soft, pale blue color in normal lighting with a clustered crystal structure and layered growth. The surface shows a silky to slightly waxy luster, typical of prehnite, with subtle translucency throughout the piece. This piece also as a unique hole in one of the sides, which under a microscope you can find a small crystal growing within! Very cool! Under longwave UV light, this specimen transforms