"このリングは今日到着したばかりなので、着け心地の良さについてはまだ何も言えません. (宝石は時々非常に輝くことがあります & pretty when brand new but quickly loses it's brillance & 傷もつきやすいなど). I haven't decided if I'm going to keep it or return it. 1つ [...]
タグアーカイブ: 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. This optical phenomenon is called the color change effect. Opal is a typical gemstone with a color changing effect. 4, discoloration effect The phenomenon that the color [...]