jade refers to an ornamental mineral, often known for its green types, though appears naturally in other colors as well, especially yellow and white. jade can refer to either of two different silicate minerals: nephrite, or jadeite.
ruby is a pink to blood-red coloured gemstone, a variety of the mineral corundum . ruby is one of the traditional cardinal gems, together with amethyst, sapphire, emerald, and diamond.
sapphire is a precious gemstone, a type of the mineral corundum, include of aluminum oxide with trace amounts of elements such as iron, titanium, chromium, vanadium, or magnesium.