Smithsonite Specimen from Ojuela Mine hematoid 5 billion years to the

5 billion years to the Precambrian era

particularly from the late 1960s through the early 1980s

giving it the appearance of a rainbow

Brazilian Kyanite exhibits a fascinating physical property known as anisotropic hardness

Smithsonite Specimen from Ojuela Mine hematoid 5 billion years to theI was excited to get this lot of Smithsonite Specimen from Ojuela Mine. It's not often you come across them from the Ojuela mine with this particular olive green color, and the sparkle on these is just out of this world. The sparkle doesn't show up well under the LED camera lighting. Under any kind of direct light, the surface of these specimens absolutely comes alive. It's a classic botryoidal (bubbly) formation, but it's coated in a layer of micro