Topaz clarity luminosity7/21/2023 However, London Blue Topaz is not a natural color, but enhanced. According to the most commonly used scale, AAAA grade topaz has a vibrant natural color and so clear of inclusions that it’s hard to see them under magnification if they’re there at all. There are basically four quality grades of natural topaz: AAAA, AAA, AA, B. However, as a rule, most topaz is already eye clean, making it what the GIA calls a “type 1” gemstone. This means that topaz which is heat treated and/or irradiated often scores higher on the London Blue Topaz clarity scale, increasing its value. While synthetic London Blue Topaz is available, at With Clarity we only sell mined topaz that is treated.Īfter cutting, a finished gemstone is assigned a clarity grade before being set into London Blue Topaz jewelry. In addition to helping produce the blue color, heating improves the clarity of the stone. While irradiation is less common, most colored gemstones sold today are heat treated. Fortunately, this is a permanent color change, so you don’t have to worry about the color fading over time. London Blue Topaz is generally brown or colorless material that’s been irradiated and then heat treated to obtain the dark blue, which does not occur in nature. When naturally blue topaz occurs, it is light in color. Knife Edge Solitaire London Blue Topaz Ringįlourish Solitaire London Blue Topaz RingĪlthough there is some blue topaz in nature, it is rare.
0 Comments
Leave a Reply. |