Ural Mountains, Russia It is exceptionally rare to find even a single demantoid garnet of a large size over 10 carats, let alone to find a pair of such exceptionally large stones suitable for mounting as earrings. The first, weighing approximately 20.93 carats and measuring 17.10 x 10.66 mm; and the second, weighing 21.81 carats and measuring 17.50 x 10.72 mm. Total weight approximately 42.73 carats (2)