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Green Apophyllite is a hydrated potassium calcium silicate mineral with a tetragonal crystal system and a hardness of 5
Shiny golden needles of millerite form a golden crust on the top of the specimen
Stibnite is oftentimes associated with gold deposits and is utilized in small amounts to harden lead
It is also said to be helpful for concentration and memory
Azurite Malachite Nodules Pairs-14mm-30mm Size:14mm Green Apophyllite is a hydratedStunning blue and green Azurite Malachite Nodule pairs from the Blueball Mine in Arizona are lovely addition to any collection. Azurite and Malachite Nodules are a handsome statement piece for your home or office. Nodules range in sizes from 14mm to 30mm. Azurite is a soft, deep blue copper mineral produced by weathering of copper ore deposits and is between 3. 5 to 4 on the Mohs hardness scale. In the early 19th century, Azurite was also known as
