Fine .999 เงิน & สเตรลิ่ง .925 เงิน 1. Fine .999 Silver Fine silver is the closest metal to the pure element silver. It is marked .999 which indicates 99.9% ความบริสุทธิ์. ที่ 0.1% remainder consists of trace elements of insignificant quantity. Fine silver has a more vitreous luster than the bright polish of sterling. It appears […]
