This is a specimen of Star Mica or Muscovite and Quartz cluster

Name: Apophyllite and Prehnite Crystal Cluster

It can also form crusts

It is silvery gold with good transparency when held up to the light

Color:  Deep Blue

Smithsonite Crystals on Matrix | Perky Box Thumbnail Specimen | Chihuahua, Mexico | SO24 Scholzite This is a specimen ofSmithsonite can occur in a variety of colors, including white, grey, blue, green, pink, brown, and yellow. Its coloration is often influenced by impurities present during its formation. The crystals can be transparent to translucent, with a vitreous to pearly luster. It commonly occurs as botryoidal (rounded, globular masses resembling a bunch of grapes) or reniform (kidney shaped) aggregates. It can also form crusts, stalactites, and stalagmites.