White and colorless gemstones have been used since ancient times and are among the most common colors for gemstones. Unlike any other gemstone color, white and colorless gemstones blend in beautifully with any outfit, skin tone, metal or occasion. These are stylish, classic gemstones that have a touch of sophistication. Diamonds are the most popular gemstone of this color category, and many other gemstones such as white sapphire, white topaz and zircon, simply serve as diamond substitutes. However, gemstones such as opals, pearls, white jade and moonstone are each unique and beautiful in jewelry.