By stibnite and chemical purification after Featured derived from the black powder. 是由辉锑矿经过精选和化学提纯而得，为黑色固体粉末。
In classic collections, Japan was the source of fabulous stibnite, long before the material from Romania, South America and China came on the market. 在经典收藏中，日本辉锑矿资源丰富，早前辉锑矿来源于罗马尼亚，南美洲和中国抢占了市场。
