Black beach stone from the Mediterranean Sea embellished with a genuine 4mm Australian Crystal Opal set in 14k gold surrounded by brilliant cut 1.5mm Moissanite gems 
 
Gem: 4mm Australian Crystal Opal,  1.6mm Moissanite gems 
Bezel and Bail: 14k gold
Chain: 1.4mm paperclip chain 18 in. 14k gold and 14k gold filled options available 
Pendant: .75 inch x .75 inch