Star Mica Metamorphic Rock with Quartz | 44.7g | Muscovite | Brazil | SO24 Ghubara When these volcanic bombs contain

When these volcanic bombs contain olivine crystals

and pyrite

Amber golden calcite from Mexico is a beautiful variety of calcite known for its rich golden to honey-colored tones

25x4 inches

Star Mica Metamorphic Rock with Quartz | 44.7g | Muscovite | Brazil | SO24 Ghubara When these volcanic bombs containThis is a specimen of Star Mica or Muscovite and Quartz cluster. On this specimen, there is a large terminated clear quartz point nestled into the gold mica stars. These clusters show crystals that grow in sheets or book formations. It is silvery gold with good transparency when held up to the light. The name Muscovite comes from the term Muscovy Glass which was a name for the thick sheets of Mica used as a substitute for glass Russia. The name Mica