Eli5 what’s the difference between gemstone and a glass

Question

Difference between gemstone and a glass . There are gemstone simultant to which people say that this is a glass not a gemstone . So what’s the difference between gemstone and a glass

In: 2

Answer 1

Pretty much everything. Glass is made of silica sand mostly, also known as quartz. Most gems for jewelry are made of completely different materials. Some stones are made of the same material, like amathyst is made of quartz too, but it’s still not the same.

Glass is made in a way that keeps it from forming a crystal structure. And the crystal structure is a requirement to make a gem a gem.