Rich red lab-created cushion-cut rubies 1.30 carats (ctw) are surrounded by a halo of sparkling lab-grown diamonds 0.0.380 carats (ctw) in a crisp polished 14 karat white gold foundation. Ruby is the birthstone for July. Lab grown diamonds are man-made diamonds that are chemically, physically, and optically identical to diamonds originating from nature. Both have the same chemical composition and atomic structure, producing the very same durability, fire, and sparkle, the only difference is origin.