Add a touch of color to your fish set up with these Aqua Culture Aqua Glass Gems. They are made with 100 percent glass, providing a flare of color and a durability that you can count on. The decorative glass gems are safe to use in either salt or fresh water, making them a versatile addition to your aquarium. In a 14 oz size, you have plenty to fill up your tank with a soft blend of colors. They are recommended for use by children and adults over five years of age. Be sure to rinse off the gems before placing in the aquarium. They can make a fun gift for a fish owner.