Green Amethyst with silver wire and Grey faux leather straps.
This stone has a pleasant vibe and can have a positive effect on the environment if placed strategically in a room. Energy healing can be enhanced with “green quartz” by laying this stone on the Heart Chakra. It can help to learn empathy in a "dog-eat-dog" environment.
Source:
http://www.crystals-gemstones.com/2014/12/green-quartz.html?m=1