Code: 518 Natural Bi color Sapphire. Blue & yellow Weight: 1.28 ct Color: blue & yellow Shape: round Treatment: non Measurement: 6.42x6.40x3.93mm Comment: color gradually moves depending on the direction of the light. Thank you for reading the description. All our gemstones are tested by graduate gemologist (GIA) to accurately identify the gemstone. Please look at the enlarged photos to make your decision easier. We know it might be difficult to buy just looking at the photos, that is why we never edit any of the photos. Do not hesitate to contact us, if you want more photos or videos of the gemstone. We also provide free jewelry consulting on purchase of every gemstone. Thanking you, Team GemDeposit Blue Sapphire, Bi Color, Natural Gemstone. 1.28Ct. No Treatment. Dancy Colors, Yellow & Blue. Certified. Cd518