July - Ruby. Adorn yourself with Lafonn's birthstone jewelry. These gorgeous stud earrings feature emerald-cut lab-grown rubies in sterling silver bonded with platinum. A rope style border gives these splendid stud earrings a classy touch. Lab-grown sapphires have the exact same chemical, mineral, and optical properties as natural sapphires which vary in color, texture and pattern. We make every effort to keep our lab-grown sapphire stone colors consistent. However, all lab-grown sapphires may not be exactly as shown on the website. Stones may appear lighter, darker or have natural variations.