Natural stone carved into an intricate skull on a 21" sterling chain. Skull is 25mm x 30mm x 21mm.

Adventurine 

One of the premier stones to attract luck, abundance and success. It comforts, harmonizes and protects the heart, helping also to attract luck in love. Aventurine is a manifestation stone that can help you bring your dreams into reality.

Found in Brazil, India, and Russia.