Multi-coloured Green Tourmaline crystal 43.4ct 8.7g Agate geode slice 546g Chocolate Calcite is distinctive for

Chocolate Calcite is distinctive for its stripes and bands of lighter and darker browns running across its surface

Chrysocolla is a hydrous copper silicate with vibrant blue-green hues

This Septarian Dragon Stone geode egg weighs 329g

Lustre: waxy to silky

Multi-coloured Green Tourmaline crystal 43.4ct 8.7g Agate geode slice 546g Chocolate Calcite is distinctive forNatural crystal specimen This item is an interesting natural crystal specimen from Afghanistan. It is a gradational multi coloured Green Tourmaline crystal on a Calcite matrix. It was obtained for Rocks and Things by our Karachi based partner, Lawrence Handicrafts. Green Tourmaline is a member of the Elbaite family. Elbaite is a complex lithium rich borosilicate mineral and member of the Tourmaline family. It crystallizes in the form of elongated rods