Vintage Acid Etched Green Glass Vase Galle Reproduction With Stamp. Glass etching, or "French embossing," is a popular technique developed during the mid-1800s that is still widely used in both residential and commercial spaces today. Glass etching comprises the techniques of creating art on the surface of glass by applying acidic, caustic, or abrasive substances. Traditionally this is done after the glass is blown or cast, although mold-etching has replaced some forms of surface etching. The removal of minute amounts of glass causes the characteristic rough surface and translucent quality of frosted glass. Floral vase is approx 4" x 4" x10". The vase is in good, vintage condition with some minor wearing on the top and bottom of the vase.