The Hall Sapphire and Diamond Necklace, National Museum of Natural History, Washington DC
The Hall Sapphire and Diamond Necklace has 36 matched sapphires from Sri Lanka which total 195 carats. These sapphires are surrounded by 435 brilliant-cut diamonds that total 83.75 carats. The sapphires are cushion-cut, some of the diamonds are pear-shaped and the others are round cut. The setting is platinum.