Most likely circa late 1890s. Good vintage condition with No chips, cracks or visible flaws. Size small approximately 4.75 inch tall x 4 inch wide (5 inch at tallest point) A few tiny air bubbles from manufacturing & could possibly use a better cleaning/ soaking but I don't see any flaws. In normal daylight the bottom looks blue & the top looks sort of light green blue with opalescent at edges of ruffle.
These are getting hard to find, a very cool peice! All fragile items are carefully packaged/ experienced glass shipper.