This 1.49 carat oval-cut sapphire is a product of Nigeria, cut with clean, even proportions. The color is a deep, dark blue with excellent uniformity across the whole stone – a rich, ink-like tone with no visible zoning or lighter patches breaking up the saturation. The oval faceting is well-executed, letting light travel through the stone's depth and return cleanly. The color owes its full expression to heat treatment.