This is the four sided die (D4) from my 'Starry' set.
It has a height of 20 mm (0.8 inch). This design is hollow and was optimised for printing in steel or any of the other metals. In steel this die weighs about 6 grams. The die is well balanced and gives a fair roll.
For all the other dice in this set, please have a look at the 'Starry' category
in my shop.