I have a supply of 4 "diamond" shaped nephrite jade cabochons. They measure 19x25mm with a 2-3mm thickness and average 11.2g in weight. They are polished to a high gloss on all sides. All have a dull bluish-forest-green coloration and are dimly translucent.
Nephrite is used to clarify dreams and assist in dream remembrance, and has been used to help with dysfunctional relationships.