Nephrite deposits belong to two endogenous geological–industrial types: serpentinite type (after serpentinite metasomatites at ophiolites) and dolomite type (after dolomite tremolite–calcite magnesian skarns). Deposits of the first type are a source of mainly green-to-brown and black nephrite, deposits of the second type give mainly light-colored nephrite from white to green, brown and black in color. The exogenous geological–industrial type of placers, usually alluvial, is confined to the primary sources.