Selenite

Selenite

From the Ordovician age

where early very productive copper mines supplied much of the ancient world with the material

The “Benz” part of the name comes from the tip of some calcite crystals which have a clearly defined three-pointed star of pyrite

many of which feature coatings of fine

Malachite is known for its deep green coloration

fluorite specimens have been prized since ancient times and are now among the most popular minerals in the collecting world

From the Upper Ordovician Period - Ashgill Stage - Ktaoua Formation

It is found in many sites across the world

Each contains at least one (most several) clearly visible insect

and is one of the more common gems although pieces of exceptional hue and clarity are considered fairly rare and can be extremely valuable

This preglabellar ring (head shield) is covered in many sensory pits which may have held hairlike features when the trilobite was alive

red and many other colors corresponding to their physical makeup and conditions when the mineral was formed