necklace length - can be worn at 41cm (16") or 46cm (18")
diplodocus - width (side view) 22mm x height 14mm x depth 6mm
t-rex - width (side view) 15mm x height 13mm x depth 6mm
triceratops - width (side view) 20mm x height 10mm x depth 6mm
stegosaurus - width (side view) 18mm x height 9mm x depth 4mm