Yellow sapphire is one of the most popular transparent varieties of gem-quality corundum mineral. The properties of the gemstone are the same as those of blue sapphire and ruby (apart of the color). The color palette is limited to golden hues: from light yellow, pastel yellowish to vivid yellow-orange. This color is mainly due to the admixture of iron. In terms of beauty, the stone can be compared to the tropical sun imprisoned in the crystal. Crystals can have both bipyramidal and barrel-shaped and prismatic appearance.