Nephrite is a variety of jade available in green shades ranging from medium to dark and may display black inclusions. Used for centuries for its true-grit hardness and classic beauty. Major deposits are found in British Columbia, Canada. Grades vary dependent on availability of rough material.
Beads>Grade B>Nephrite JadeBeadsGrade BNephrite JadeGreensBall4mmNaturalhttp://www.firemountaingems.com/itemdetails/h203732gsH203732GSBead, nephrite jade (natural), light to medium, 4mm round, B grade, Mohs hardness 6 to 6-1/2. Sold per 16-inch strand.//image1.fmgstatic.com/images/p3732gsb(4).jpg33.6933.69As Low As $17.67 per strand