Sulfur mustard. Sulfur mustard, commonly known as mustard gas, is the prototypical substance of the sulfur-based family of cytotoxic and vesicant chemical warfare agents known as the sulfur mustards which have the ability to form large blisters on exposed skin and in the lungs.
Silver jewelry, ornaments, and silverware are traditionally made from Sterling Silver. Sterling Silver is an alloy composed of 92.5% silver and the remainder 7.5% other metals, usually copper. Britannia Silver - Silver that is alloyed with a maximum of 5% other metals.
The item is sterling silver with a gold plating. Sterling, .925, or 925. The piece of jewelry is made of sterling silver, which means it must have 92.5 percent silver metal in it. Silver-plated or silver electroplate. The item is base metal with a thin coating of silver on the surface. Nickel silver or German silver.