Magnesite

Magnesite

from the Upper Silurian age

It rarely occurs in crystal form but is often found in botryoidal or fibrous formations

with particularly high shine or uniquely shaped pieces prized by collectors

Azurite is a striking copper-based mineral found in shades of deep blue to vivid green

Pyrite formations tend to be shiny and metallic

in iron smelting and other metallurgy

One of the most widely recognized and unmistakable minerals

Malachite is known for its deep green coloration

many of which feature coatings of fine

it is not uncommon for insects and other small animals to become trapped within tree sap

with nodules and delicate filigree-like branches

resulting from the oxidation of its copper and sulfide components