Fostoria Loop Optics and Drape Optics - Neat Effects in Glass

The green vase is from Fostoria, made in the late 1920s. It doesn't have any etching or other decoration so the pattern is from the optic pressed into the glass.

Optics are shaped on the inside; they are a molded design that makes the piece look shimmery. Some optics are vertical, like panels, others are spiral, or dots or like this example, look like festoons or drapes. Usually the optic will be named something you can recognize so they are not as difficult as some etchings to remember.

Fostoria used optics in several designs. Besides this vase, they used the loop optic in the stemware pattern Cellini, and the ice tea in that design is shown on the right.

Most glass companies used optics. Some are subtle and you will hardly notice them while others jump right out at you. Even depression glass patterns used optics. Block Optic, for example, has vertical lines on the outside and horizontal optic on the inside, making the design look like stacked blocks.

We have all of these listed in our eBay store and our TIAS store, linked on the left. Happy Glassing!