This coaster features our San Francisco Golden Gate Bridge design.  Multi-functional little art pieces make great gifts, and are a great size (and price) for buyers. This design is perfect for residents and tourists alike. Light amber glass, printed in red glass enamel 4" square, with rubber bumpons on bottom Dishwasher safe Handmade in the USA Coasters are screen printed, fused glass.  Glass is cut, and screen printed by hand with fine glass enamels, then fused overnight to 1415 degrees in a kiln. Each piece is made by artist Laurie Freivogel in her Oak Park studio. This design is part of a series and has other matching housewares!