The tourmaline's bright pink color is enhanced by the sparkling white diamonds that surround it and adorn the bale. For a distinctive look, the diamonds are mounted in a bar setting. This elegant and stylish pink tourmaline halo pendant is sculpted in 14k white gold.Gemstone Treatment - Gemstones are often treated in different ways to improve their appearance.Some Gemstone Treatments Usually Done:Heat treatment - Amethyst, tanzanite, tourmaline, citrine, topaz, aquamarine, ruby and sapphire gemstones are heat treated for enhanced clarity and brightness.Oiling - Oil is rubbed onto the surface of emeralds and rubies to reduce the visibility of fractures and improve brilliance.Diffusion - Chemicals are infused into sapphires for accentuating or changing their color.Dyeing - Black onyx gemstones are treated with coloring agents to enhance, intensify or improve uniformity of color.HPHT and Irradiation - Blue diamonds are irradiated to enhance optical properties followed by HPHT to make desired color alterations.Diamonds - All our white diamonds are non treated.