A Temple St. Clair Moonstone Night Owl Locket with round-cut sapphire eyes and diamond accents, set in 18K yellow gold. 
Official Retailer
Moonstone: 1.63 total carat weight
Sapphires: 0.16 total carat weight
Diamonds: 0.17 total carat weight 
Length: 1.50 inches 
Width: 25.4mm