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- Order number: MB137
Rock crystal on sphalerite and pyrite
0% fair traded
Quality: A / B
Length: approx.5.5 cm
Width: approx.4.5 cm
Height: approx.3.5 cm
Weight: 78 gr.
Our minerals come from various mines in Peru. Most minerals are not found in nature alone. They sit on so-called "mother rock" and often form "paragenesis" (groups of different minerals one above the other or next to each other). So our minerals are mainly on bedrock and in paragenesis with one or more other minerals that are often found in Peru.
Rock crystal (SiO2): The rock crystal is a semi-precious stone and belongs to the quartz crystals (degree of hardness 7). It is colorless, clear to slightly cloudy and often contains inclusions (mostly rutile or tourmaline). Rock crystal is found all over the world. Very beautiful and clear rock crystals can be found in Brazil. The clearest and purest rock crystal is the "Herkimer Diamant", which owes its name to the place of origin. However, the crystals from Peru are also beautiful and sometimes very clear.