Corelle is dishware made of three layers of two different types of glass, thermally bonded, giving it strength and allowing it to be thin and lightweight. Introduced in the 1970s, it remains popular today, and those early patterns have become collectors items.
The most collectible patterns are those, which Pyrex made its Compatibles line to match. These include: Butterly Gold, Snowflake Blue, Spring Blossom Green, and Woodland Brown.
The Pyrex Compatibles line included nesting bowls, ovenware, mugs, cream and sugar sets, salt and pepper sets, napkin rings, gravy servers, and butter dishes.
While Pyrex has been a collectible for years, Corelle is just coming into its own as an item which evokes nostalgia. For this reason, Corelle is still widely available at secondhand stores and for reasonable prices on eBay and other online venues.
Corelle has always been advertised as chip- and break-resistant, making it an excellent, usable collectible.
Corelle carried several designs in the 70s that were a repeating design in one color on a white background. This has helped the vintage patterns hold up against the test of time. They are elegant and simple, making even your everyday table look fantastic.