Other Blog. Emerald Emerald is crystal mineral in Beryl family, consisting of Chromium (Cr) and resulting in white. Premium emerald must be transparent with even color over the grain. Ruby Ruby is the gemstone in the Corundum family with hardness inferior to diamond. It is popular for use in making jewelry with high commercial value. 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.
