Very Victorian in feeling. Center flat section is 18mm, you'll need five to six to make a bracelet----usually til you figure in the jumps to connect and the clasp (generally I use either a lobster connected by several jumps or a nice round box clasp). They are about 35mm square, brass base, silverware silverplate finish. Sold by the piece. Silverware is the industry's premier silver finish---99 percent pure silver in the plating bath. It's more expensive....and it's worth it.