US Glass made Floral and Diamond (also called Floral and Diamond Band) in the very late 1920s, mostly in pink and green. It’s typical US Glass mass-produced molded glass with rough seams and inconsistent colors. The pattern has big flowers with a band of diamond shapes near the top and a star on the base.
Floral and Diamond is luncheon ware, with several serving pieces including a serving bowl, comport, 2 sizes of creamers and sugars, a butter dish and pitcher. There are also tumblers as shown above and sherbets.
I saw very little of this glass in the years we shopped for depression glass and all what I did see was green. Checking online August 2022, I see just a few pieces of green on eBay and none in stock on Replacements.com.