Large Dragon glass (Obsidian) Pendant 1 1/2 inches long on Silver Tone Dragon Wrapped around the Crystal - Dragon glass is the crystal that was used in Game of Thrones to kill the Whitewalkers
They come on an 18 inch silver plated chain in a Gift Box
Obsidian is a shiny black volcanic glass - It is an Ancient Talisman used as protection to ward off negative energies but also to reflect back to us our own negative feelings of resentment, fear etc so we can do something about them
Obsidian has also been used as scrying glass by the Wiccan tradition - used as a seers glass it is said to give access to visions of the future - so maybe Bran had a few in his pocket too.
CHECK OUT OUR OTHER GAME OF THRONES ITEMS = DRAGONS CRYSTALS ARROWHEADS PENDULUMS