Natural chrysocolla with azurite is a mixed mineral specimen, formed from copper deposits, that features distinct blue azurite crystals alongside a blue-to-green silicate, chrysocolla.
 
Azurite has a deep blue hue, while chrysocolla can range from blue to brown or even green. When these two minerals come together as azurite chrysocolla, they form an interesting blend of blue from azurite and green from chrysocolla.