The following is a list of Obsius gems and minerals listed in our database. Click the pictures to get full data, click the X to remove the gem from the list.
Obsidian: Obsidian is an extrusive igneous rock, a volcanic glass formed by rapid cooling. Its essential component is glass. Its accessory components are magnetite, ilmenite, oxides and other minerals, such as feldspar. It has the same composition as dacite or rhyolite, with less than 1 percent water. Its color is shiny black, with clear conchoidal (shell-like)fracture, its texture glassy with rare micr (read full)
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Cassiterite may form as short or slender prismatic, or bipyramidal, elbow-shaped crystals. It has a crystal surface reflecting light as
Chrysocolla is a silicate that forms as stalactitic masses, in radiating groups, or closely-packed aggregates. It appears as green, blu
Goshenite is a colorless sodium-rich gem variety of Beryl, a group which includes Emerald and Aquamarine. Other gem beryls include Heli
Agate Chalcedony differs from other Chalcedony in that it often has distinct banding. In fact some slices of Agate may appear to have