Nephrite is the main source of this gem; it comes in white, red & dark green, which is the most valuable type
These jewelry items are often made of solid jade, combined with other 
gems,... [DOC] [TLE] 51 Types of Green Gemstones for Jewelry | Kamayo Jewelry [PAR] Oct 19, 2013 ... Jadeite is the most expensive variety of jade stones, and is most ... unrelated 
variety of jade, nephrite, jadeite is also available in white.