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黄玉晶體呈玻璃光泽,透明。通常為無色或帶黃色調,天然產出的黃玉還有淡黃、深黃、天藍、粉紅、紫粉紅、淡綠、褐色等。我國產出的黃玉多为無色透明。由於天藍色黃玉顏色穩定、漂亮、不易褪色,外貌酷似海藍寶石,而其價格僅是海藍寶石的十分之一到幾分之一,因此越來越受到人們的青睞。黄玉顏色改善的基本方法用輻照或輻照—熱處理的方法使無色黃玉改色并使之更加艷麗是國際上目前通用的方法。這些方法的共同點是:在高能粒子的作用下,使黃玉晶體内造成較多的點陣缺陷—空位和離位原子,產生色心,使之呈色,通過熱處理,去掉雜色,穩定色心。
Topaz crystal was shiny glass, transparent. Usually colorless or yellowish yellow, natural output of topaz and yellow, dark yellow, sky blue, pink, purple pink, light green, brown and so on. Most of the topaz produced in our country are colorless and transparent. As sky blue topaz color is stable, beautiful, not easy to fade, look resembles aquamarine, and its price is only one-tenth to one-fifth of aquamarine, so more and more people of all ages. Topaz the basic method to improve the color Radiation or irradiation - heat treatment method to change the colorless topaz and make it more beautiful is the current international common method. The common denominator of these methods is that, under the action of energetic particles, the topaz crystals cause more lattice defects - vacancies and out-of-position atoms, resulting in a color center that gives rise to a color. By heat treatment, the variegated color is removed and stabilized Color center.