Once gifted by Napoleon, the heirloom is now bejeweled in December’s birthstone Abigail Eisenstadt Turquoise makes a striking contrast against diamonds in this diadem from the 1800s. But the ...

READ MORE: Lotus Flower tiara: Art Deco diadem worn by Kate Middleton but hasn't been seen in 5 years The gold and platinum structure is covered in delicate diamonds, and is completed with Persian ...