Unlock your inner strength with this Black Obsidian, Arrowhead, With Amethyst 18" Stainless steel, Necklace Pendant Size: 2.8" $25. This arrowhead necklace is a powerful reminder of your personal power and resilience. Black obsidian is a grounding stone, believed to absorb and transmute negative energy, while amethyst promotes emotional balance and clarity, offering a deeper understanding of yourself and your place in the world.