6mm plywood weighs 8.406 pounds per sq m or 3.82 Kgs per sq m
53.2
dear me,,, 6mm, sigh!
it depends. 6mm is refuring to the bbs size. 12g is describing the weight of an bb
20%
6mm would be 0.6 cm because 10mm is 1cm and 1 cm -4 would be 0.6
55 kgs
25KG
6mm chequered ms plate per square meter weight
3.85
6mm glass weighs 16 kg/m2 or 3.27 lbs per square foot
6mm glass weighs 1.5Og/cm2. therefore 15Kg / m2
6mm Thk MS plate weight for one metre
0.222
Its going to depend on the cut style (need the depth and faceting), but based on your listed measurements its a square cut that is probably .85ct or so. A 6mm x 6mm square is normally 1ct. I would definitely recommend you get it appraised for an exact carat weight estimate (or direct measurement if it is loose).
53.2
Dear, weight of 6mm ms bar is 0.22kg
53.27 kg/sq.m