The flame fusion method also known as Verneuil Process was created in 1893 to grown synthetic gemstones. First used to grown synthetic corundum, corundum is just aluminum and oxygen, trace element add different colors. The technique is still used today. Synthetic corundum are created in different colors, red corundum is named ruby, blue corundum known as blue sapphire. The material is more like glass of aluminum oxygen, but synthetic corundum is not glass. Today let me show you lab created ruby rough----red corundum, as red is shade color from light to dark. Lab created ruby rough have a series of colors included ruby #1.25, ruby #2, ruby #3, ruby #5, dark ruby #8

                              lab created ruby #1.25                                                  lab created ruby #2

                            synthetic ruby rough #5                                               garnet lab created ruby #8