Then I found out it is an antique chatelaine glass perfume holder. Beautiful lattice design with blue dots and gold accents against a dark blue or black background. Believed to date to Victorian era, late 19th century.
Not sure if it is Murano-Venetian or possibly Bohemian. Size: 1 1/2" high x 1" wide, very good original condition, missing cap. Condition: glass is in very good original condition, plit ring at the end of the chain may be a replacement ring, chain is darkened and cap is missing. Note: Photos with salmon background were taken inside and the white background photos were taken outside.