Green Tourmaline crystal on unusual Clear Calcite crystal overgrown dusted Mica layer 144g Ammonite museum piece Grape Agate is a rare

Grape Agate is a rare chalcedony found in only one locality in Indonesia

Lawrence Riaz travelled to the Gemfields of Afghanistan in 2023 for Rocks and Things Store and sourced this natural Blue Tourmaline crystal

Mineral Class: Tourmaline (Elbaite)

The stone is wonderful Mangano Calcite

Green Tourmaline crystal on unusual Clear Calcite crystal overgrown dusted Mica layer 144g Ammonite museum piece Grape Agate is a rareOvergrown layer This Green Tourmaline crystal on unusual Clear Calcite crystal overgrown dusted Mica layer weighs 144g. What is unusual about this crystal is revealed when you look through the Clear Calcite cap. Underneath you can see the lower external rough Mica rich layer extends upwards, under this cap. The underlying crystal with the rough layer formed first and then was partially overgrown by this Calcite cap crystal. There is also a Green