This little teacup is made of pot metal, it's from the 1920's and came out of a Cracker Jack box! What a fun origin story. It is a collector's item. Measures approximately: 1/2” Top Dia. X 1/4” Tall X 1/4” Bottom Dia The cup is filled with a vibrant Angel opal that is really flashy, the video doesn't do it justice at all! It looks out of this world magical. It comes on an antique chain that is really long at 32 inches long, it is adjustable but has approx a 16 inch circle.