This is a sasabuki (granulated silver) that I currently use for work. The purity is pure silver 999.9 (Ag1000). I always have it refined and analyzed by Aida Chemical Industries. Net weight (without tare) is 50g. Following the ratio, I melt sasabuki pure silver and copper together to make silver 925, 950, etc., and melt pure gold, sasabuki pure silver, and copper together to make base metals such as K10 and K18. The price is based on today's over-the-counter prices at domestic bullion dealers and fluctuates with the market. (I refer to the final purchase prices of sasabuki from Seaforce, Ijima Precious Metals, and Komokin, and it is more advantageous than those prices.) *Please note that returns are not accepted after shipping to prevent substitution.