Sugar crystals are oblong and slanted on both ends.
From eating too much sugar.
Sugar forms crystals that are typically monoclinic in shape, which means they have a rectangular or elongated prism shape with slanted edges. These crystals can vary in size and are commonly found in granulated sugar or sugar cubes.
Powdered sugar crystal
Sugar crystals are a solid form of sucrose.
Pearls are not crystalline and don't have a crystal shape.
Agate, being a cryptocrystalline (microscopic crystal structure) form of quartz, does not have a crystal shape.
minerals get its crystal shape by the heating and pressure from rock
It is useful because it brings taste to food. Also because of the shape you are able to tell the difference between salt and sugar. The shape of salt is crystal; granular.
sugar
sugar
at sugar peak click on the crystal
monoclinic