Box Size(s) approx. with Round Coin:
  10 gm - Outer Size 82mm x 82mm (diameter 33mm)
  20 gm - Outer Size 87mm x 87mm (diameter 39mm)
  50 gm - Outer Size 95mm x 95mm (diameter 51.5mm)
100 gm - Outer Size 103mm x 103mm (diameter 61.75mm)