Precious gems are valuable and sought-after stones that have been used for centuries in jewelry and other decorative items. AQUAMARINE is a blue-green gemstone that is often found in Brazil and is the birthstone for March. Pearls are organic gems formed inside of mollusks and are usually white or cream in color. Emeralds are green gems that are found in Colombia, Zambia, and Brazil and are the birthstone for May. All three of these precious gems are highly valued and sought after for their beauty and rarity.