Here is a hexagonal cut Blue Sapphire. Filled with a regal blue, this gemstone that has an eye clean appearance is what adds value. Blue sapphires are becoming a trending choice for engagement rings and this gem, with ideal proportions of 8.35 x 7.33 x 4.03 mm make it the perfect fit. A gemstone that represents loyalty, the blue Sapphire is the ideal choice for a ring to celebrate a relationship.