Their main components, optical properties and physical properties are the same as the corresponding natural varieties, but they are purer and more suitable for industrial or jewelry requirements. The synthesized colored crystals must be added with some colorants or doped ions to form color centers and present beautiful colors, or become another color after irradiation or heat treatment.
For example, rose or light green brown with titanium, light brown with vanadium, green with chromium, dark brown or dark green with manganese, purple or bright yellow green, yellow brown, yellow brown with iron, brick brown or light blue with cobalt, light green with nickel, light yellow with copper and dark brown with aluminum. [1] Amethyst is the noblest and most beautiful member of the crystal family. It is also known as the Feng Shui Stone. The Japanese call Amethyst the Energy Stone. Amethyst is purple because it contains a small amount of Fe (iron), and iron oxide is the main reason for its bright purple. Amethyst will also form other patterns, most of which are inward crystal holes (amethyst holes), while outward growth of amethyst clusters (the most common in the market is white crystal clusters) is extremely rare.