Caledonite forms small, but well formed and intricate crystals. It has a nice high luster, due to its lead content and a beautiful blue to green color due to its copper content. Linarite is normally a deeper blue and tabular or prismatic, but with a slanted, non-symmetrical termination. Caledonite and linarite are found in the oxidation zone of copper and lead ore deposits. Both minerals are beautiful and make for outstanding micromountable specimens.
Color is green, light blue, blue to blue-green.
Luster is vitreous to resinous or greasy. Specimens are transparent to translucent. Crystal Habits include small micromountable prismatic and less often, tabular crystals with a truncation formed by multiple parallel domal and pyramidal faces. Acicular interlocking and radial aggregates are typical. Individual crystals can display a wide range of crystal faces.