Antique English Coral, Pearl and Diamond Demi-Parure

This exquisite set consists of a necklace, a pin/pendant, and earrings in their original presentation box from Watherston and Son, London.
Circa 1860-80
 
Necklace length: 16 3/4 inches
Earring length and width: 2 inches and 3/4 of an inch 
Pendant length and width: 3 inches and 1 1/4 inches
Pendant as a pin length and width:  2 1/2 inches and 1 1/4 inches