Lunar Kitty Crystal Bath Bomb: a moon-and-cat bath bomb with a rainbow obsidian inside, scented with coffee, vanilla, orange blossom, cedarwood and patchouli. What Makes This Piece Crystal: rainbow obsidian Scent: coffee, vanilla, orange blossom, cedarwood and patchouli Maker: Crystal Bar Soap About Rainbow Obsidian Rainbow obsidian is volcanic glass that looks black until the light hits it, then shows bands of purple, green and gold. In crystal lore it is a stone of protection, grounding and transformation. Care Keep it dry until you use it. Drop it into a warm bath and let it fizz away, then rinse the crystal and keep it. A Note on Your Selection The crystal is a natural stone, so its shape, size and colour differ a little from one bath bomb to the next and from the photo. Pairs Well With Psychic protector – Crystal-infused bath bomb, Black Obsidian Tumbled Pocket Stone, New moon – Crystal-infused bath bomb.