1.55" Vivid Blue, Cut & Polished Azurite Nodule - Siberia

This is an incredibly vivid, blue azurite nodule that has been cut in half and polished. One half of the nodule is included. There are small, dark pockets that contain druzy azurite crystals within the polished face. These vibrant nodules/geodes come from Poteryaevskoe Mine near Rudnyi Altai in Siberia.

Azurite is a copper carbonate hydroxide mineral with a chemical composition of Cu3(CO3)2(OH)2. It is best known for it's beautiful and vibrant blue appearance, typically forming with other colorful, copper rich minerals.

Azurite and malachite are known to form in union with each other, for their chemical makeup is very similar. In fact, the presence of more or less water in the location of formation, is enough to determine whether an abundance of malachite over azurite, or vise-versa, will accumulate.
Poteryaevskoe Mine, Rudnyi Altai, Siberia, Russia
Polished face 1.55 x 1.4", up to .6" thick