Libyan desert glass otherwise known as libyan gold tektite
Measures 3cm x 2cm 
A little information: 
Believed to have formed 29million years ago via meteorite hit the desert sand. It has been used since ancient Egyptian times as it has been carved as a heart scarab beetle on ritual jewellery for Tutankhamun. 
Crystal healing properties are believed to be protective, helping you to open spiritual vision as well as grounding you. It is believed to help free you of the past.