A ruby is a pink to blood-red gemstone, a variety of the mineral corundum (aluminium oxide). The common red color is caused mainly by the presence of the element chromium. And sapphire (antique greek: hyacinthos) refers to gem varieties of the mineral corundum, an aluminium oxide (Al2O3), when it is a color other than red (ruby) or pinkish-orange (padparadscha). Here, we offer kinds of ruby & sapphire jewelry. Enjoy your time here and find your favourite.