Natural Rock-Egg: Larvikite (a type of Laboradite from the Feldspar Family) 34x44mm
Larvikite is a monzonitic Feldspar rock from the Feldspar family. It contains Nepheline Syenite, Plagioclase, Perthite, Anorthoclase, Anorthite, Ortholclase, and Albite. This stone is usually dark grey, dark blue, or black in color. It also usually has Nepheline or Quartz inclusions.