"This ring just arrived today so I cannot yet say anything about the quality as far as how well it wears. (sometimes jewelry can be very shiny & pretty when brand new but quickly loses it's brillance & also scratches easily etc). I haven't decided if I'm going to keep it or return it. Один [...]
Метка архива: silver bangle manufacturers
3. Color changing effect The color produced by the interference and diffraction of the special structure of the gemstone changes with the light source or the observation angle. Это оптическое явление называется эффектом изменения цвета.. Опал — типичный драгоценный камень с эффектом изменения цвета.. Четыре, discoloration effect The phenomenon that the color [...]