Obsidian is a naturally created glass. It is formed form volcanic lava which cooled too quickly for significant crystallization to occur. It is most often black, but colors such as gray, brown, and less likely but evident still is red, blue and green. These colors may be uniform, spotted or banded. 

Obsidian helps those who are sensitive against depression. It is a the stone of the soft hearted and gentle people of the world. Use obsidian to help block negativity of any kind.

Assists in clarity and deflects negativity.  Protection, healing and grounding.

Smoky quartz is a very protective and grounding stone. It brings physical and psychic protection. It is also an excellent stone for protection from negative energy, as It removes negativity and negative energy of any kind and transforms them to positive energy.

Source: meanings.crystalsandjewelry.com

* wrist size 14.5cm

TC-06