Vintage Ruby Red Cased Art Glass Vase with ruffled white interior.

Cased glass, also known as layered glass, is a technique where two or more layers of glass are fused together, typically with a contrasting color on the exterior and interior. The technique was particularly popular in the late 19th and early to mid-20th centuries This particular vase, with its ruby red exterior and white interior, exemplifies the aesthetic appeal of cased glass. The ruffled rim and the paneled, almost heart-like shape of the body are characteristic of decorative art glass produced during the mid-20th century.