The star of adam with a weight of 1 404 49 carats 280 898 g the largest star sapphire in the world. The only precious gemstones are diamond ruby sapphire and emerald. The black prince s ruby actually a spinel mounted on the imperial state crown.
The star of adam with a weight of 1 404 49 carats 280 898 g the largest star sapphire in the world. The only precious gemstones are diamond ruby sapphire and emerald. The black prince s ruby actually a spinel mounted on the imperial state crown.