Included in this lot is a stunning example of oval cut blue sapphire and white Burmese sapphire gemstones. Sapphires come in all ranges of colors from blue to black to colorless and all colors in between. There are no limits to the color tone or saturation of color in a sapphire. The way in which sapphires have different colors is through the trace mineral content within a sapphire crystal. A chemically pure sapphire crystal would be colorless. Whatever ingredients nature puts in a sapphire is what special unique color it will show. The first oval cut sapphire shows a gorgeous deep blue color and measures 6.04mm x 4.85mm x 3.10mm and weighs approximately 0.73 ct. The second is a beautiful pear cut white Burmese sapphire measuring 12.01mm x 10.55mm x 4.65mm and weighing 4.42 carats.