GIA Knowledge Sessions Webinar - recorded live on June 4, 2020.The nacreous and non-nacreous layers that make up a pearl conceal many ... ... <看更多>

Different Pearl Types & Colors | The Four Major Types of Cultured Pearls | GIA. Perhaps the best-loved gems of all time, pearls—both natural and cultured ... ... <看更多>

Little Pearls & Gems - 珍珠, 鑽石. 客人2克拉GIA婚戒換戒台，20幾萬人民幣的鑽戒 新款要求“厚金打造” 光戒台就有6克！今天拍了蠻多幕後花絮，稍後 ... ... <看更多>