You test it by checking the melting point
minerals
The best and trusted way is by chemical test
If the temprature of water is increased the crystals would not be formed because they would be dissolved.
burn it if its gold it want burn
Density
test tungsten purity
Diamonds are formed in a crystalline structure from carbon. Not all crystals are formed from carbon; not all crystals are diamonds.
you should talk about how crystals are formed and what type of crystals there are
Yes, in fact that's how a lot of crystals are formed.
After the evaporation of water crystals are formed.
This is a type of salt with a specific purity, crystals size, etc.
Crystals that are formed below the surface are formed by the cooling of magma. Crystals above the surface are formed when a volcano erupts, and cools, again, above the surface. Crystals that are below the surface usually have a slower rate of cooling than those above the surface, causing bigger crystals because of the slower cooling:)
After the evaporation of water crystals are formed.
Underground crystals are bigger where as crystals formed on the surface are smaller.
The crystals formed early by magma would not be deficient of certain elements. Once these elements are used up, they are not available in the magma to form later crystals.
Melting point tests are the easiest and simplest to conduct.
A mineral.