Blue Abalone also know as green abalone or Haliotis Fulgens is an interesting shell, found with a dull brownish exterior and an iridescent blue-green interior with several natural holes. Found near the coast of California and Mexico they are often considered a delicacy among seafood connoisseurs.
Commonly used as a natural incense burner or for its beautiful mother of pearl blue-green interior broken up for jewelry crafting/ inlaying