Mother of Pearl or Nacre forms in the shells of bi-valve mollusks found in salt and fresh water. These mollusks are found around the world from the Great Barrier Reef off the coast of Australia to the Gulfs of Mexico, Panama and Venezuela. Used in trade for thousands of years Abalone oysters are found in abundance around the world. As well as being produced for their meat, they are an excellent source of highly iridescent Mother of Pearl and Pearl, ranging in beautiful colors from turquoise, green, cream and rose.

Green Abalone thrives in the cold and rocky waters in the Gulf of California. They are often encrusted with small clams that adhere to their surface whose presence gives rise to the creation of blister pearls within the Abalone. Blister pearls are formed when the clams bore into the shell from the outside, the Abalone responds in defense to the intrusion by secreting layers of nacre, which coat the foreign body on the inside of the shell eventually solidifying forming natural blister pearls. Harvested since millennia, the black-lipped oyster, covering the widest geographical area of any known species, was the preferred color of Mother of Pearl of Indian and Persian monarchs. However, despite this oysters name the nacre is rarely pure black, instead the colors range from gray to green with blue or rose overtones. Mother of Pearl produced by Pacific black-lipped oysters is the most sought after on the world’s market today.