Obsidian chip bottle necklace

This is a beautiful crystal necklace. It had between 5/10 obsidian chips inside the bottle. It is on a black cord necklace and comes in a lovely jewellery box too. 

Obsidian: It is believed that Obsidian has properties to be able to fend off negative energy, protect and ground you both physically and spiritually. It is said that obsidian can help release emotional blockages, such as stress and tension. It is believed that Obsidian is known to align and balance the root chakra which is associated with grounding and security.