Heart: 3.4mm tall x 4mm wide x 1.1mm thick.

Club: 3.9mm tall x 3.8mm wide x 1.1mm thick.

Diamond: 4.2mm tall x 3mm wide x 1.1mm thick.

Spade: 3.8 tall x 3.7mm wide x 1.1mm thick.

Shown on a 16g threadless post.