Black Obsidian Gemstone Roller with Black Pepper Oil €15.00 Quantity: at €15.00 each Add To Basket 2 in stock. Black Obsidian is grounding and protecting. It can help bring hidden emotions to the surface. Black Pepper is warming, builds endurance and helps you reconnect with life whenever you feel alienated. Black Pepper is full of mystery and intrigue and fortifies both mind and spirit.