Cambridge Bowl in Rubina

Feb 27, 2023 | Museum Monday Treasures

Today’s Museum Monday treasure from the Museum of American Glass in WV is a Cambridge bowl in Rubina, with a block (or honeycomb) optic. This color was unique, shading from red at the rim to yellow and then a greenish color merging into blue. The process was achieved by reheating the piece so there was a great deal of variation. The color was introduced in 1925 and probably discontinued very shortly thereafter. The bowl is marked on the base with a triangle with a “C” in the center. It is 10 ½” in diameter and 2 ¾” high.

Block optic was also used on the No. 500/122 56-ounce amber pitcher in the second photograph. It is 9 ½” high and would originally have had a lid. This Block Optic pitcher was advertised as new as part of a set with tumblers in 1925.

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