Other Blog. Pink Sapphire Pink Sapphire is the colored stone in Corundum family, with maximum hardness inferior to diamond, resulting in resistance to scratch. Solitaire Solitaire is the ring with single diamond in the setting and represents symbol of “single love". It is popular for use in engagement. Black Diamond Black diamond is the diamond with more carbon content than diamond in other colors and maximum hardiness and used as diamond for general diamond cutting.
