I had a little beetle, Beetle was his name. I called him Alexander, but he answered just the same.
Ladybird or Ladybug Cufflinks (depending on your point of origin).
Plated and enamel cufflinks
Dimensions (LxWxH): 18mm x 19mm x 2mm (approx.)
Weight per cufflink: approx. 4g (light)
Size = x mm (W x H)