Treasure of the Deep .. 
necklace, earrings set
This is a stunning iridescent electric greens, teal and purple abalone cabochon in a glorious fine silver setting with hammered texture!  
1 3/4" from the top of the rings, 2" wide
Gorgeous and supple 18" sterling silver Omega chain. 
Companion abalone hook earrings included 
In Native American cultures, the abalone shell is used as a smudge bowl to burn sage in. They believed that the abalone and sage together will carry their messages up to heaven. ... Abalone meaning is one of solace, a connection to the ocean, the cycle of life, protection and ancient travel.