Aprils birthstone is a natural diamond which can be quite costly. This Lab Created Cubic Zircon is by far one of the prettiest lab created gemstones we offer. This CZ is supplied by Swarovski Gemstones and has a maximum play of color due to its superior quality and cut. For many, this will naturally becomes a favorite due to its durability, luster and true beauty. This is a sure bet when deciding on a gift idea. My customers repeatedly choose this gemstone due to it's versatility.