The Pyrex Turquoise Snowflake Casserole 043 is a vintage 1.5-quart oval casserole dish made of opal glass, featuring a vibrant turquoise background adorned with white snowflake patterns. Part of the Snowflake collection introduced in the 1950s, this mid-century piece includes a matching clear glass lid and is prized by collectors for its iconic design and retro charm.