The Yellow Sapphire is a gem of the corundum family and is a twin of ruby and blue sapphire. It is available inyellow, golden and orange colours. The highest quality is known to be of lemon-yellow colour. The colour inyellow sapphire is of iron and titanium. Benefits of Wearing a Yellow SapphireStone. Carat size - 4ct Dimension - 8mm 4.5mm 3mm Oval faceted Quality - super fine origin - ceylon (Sri Lanka) Quantity - 1 piece