The most common 6-sided dice (D6) are cubical, also called hexahedron or hexaeder.
Recently also so-called spindle or crystal D6's are on the market.
Cubic DICE with REGULAR NUMBERS (1-6)
[0760] Small numbered hollow dice, made from folded iron, 11 mm
[0950] A huge colorful die, wood, 51 mm
[0951] A largen wooden die, 31 mm
[0952 x3] Red/green/blue wooden dice, 18 mm
[0954 x3] Dice with razor sharp edges, plastic, 16 mm
[0956 x10] Various speckled dice with numbers, plastic, 15 mm
[0957 x5] Various wavy dice with numbers, plastic, 14.5 mm
[1553 x6] Dice with razor sharp edges, plastic, 14 mm
[1554] Die with razor sharp edges, plastic, 14 mm
[1678 x4] Set of 4 plastic numbered dice, 16 mm
Cubic DICE with IRREGULAR NUMBERS
[0948 x9] Dice of a for me unknown game, bakelite/plastic, 13 mm
[0949] A 'bits' dice to randomize your computer, wood, 16 mm
[0953] Dice with 1,2,3 and hearts and 1,2,3 with broken hearts, plastic, 16 mm
[0958 x7] Various dice with 1,1,2,2,3,3 marking, also known as 3-sided dice or'Low throwers', plastic (and one wooden die), 16 mm
[0959 x4] On the left 3 plastic dice with the numbers 2,3,3,4,4,5, usually called 'averaging dice', 16 mm
On the right a wooden red die with the numbers 1,3,5,7,9, and one empty side, 14 mm
[1591] Dice with numbers 5,6,7,8,9,10, wood, 25 mm
[1592] Dice with numbers 2,2,3,4,5,6, 1018 colled rolled steel, 9.5 mm
[1593] Die with numbers 1,1,2,2,3,3, wood, 18 mm
[1595] Die with numbers 10,20,30,40,50,60, wood, 14 mm
[1608] Die with numbers 0,6,7,8,9,10, wood, 14 mm
[1609] Die with numbers 1,2,3,4,5,10, wood, 14 mm
[1612] Die with numbers 1,1,2,2,3,3, wood, 16 mm
Non-cubic DICE with numbers
[0983] Spindle dice, known as "Crystal dice", plastic, 25x8 mm