The fine investment powder is applicable in (1)solid gold,karat gold,silver (2)brass alloy high-grade jewelry casting. Features:1 The ... , can be directly used in stone (diamond) in place wax setting.4 This investment powder is applicable in solid gold, karat gold, ... silver and brass alloy high-grade jewelry casting, and is the investment in common use.5 Automatically collapsed when dip into water, ...