大丈夫 .999 銀 & スターリング .925 銀 1. 大丈夫 .999 Silver Fine silver is the closest metal to the pure element silver. It is marked .999 それは 99.9% 純度. The 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 […]
