This is a very rare and hard to fine Nephrite Jade Rutilated Quartz Crystal called Actinolite in Quartz.  Actinolite sometimes occurs as thin, splintery inclusions inside Quartz crystals as shown...

This is a very rare and hard to fine Nephrite Jade Rutilated Quartz Crystal called Actinolite in Quartz with very extensive and dense jade rutilation.  So this is piece is...