Crystal stone is an alias, also called crystal. English name is Rockcrystal, also known as spar and crystal stone. Crystal is a colorless and transparent timely crystal mineral. Its main chemical composition is silicon dioxide, which is a substance that "comes out of the uterus" with ordinary sand. When the silicon dioxide crystal is perfect, it is a crystal; Silica becomes agate after gelatinization and dehydration; Water-containing silica gel becomes opal after solidification; When the particle size of silica is less than several microns, chalcedony, flint and secondary quartzite are formed.

Personally, I think crystal jade is an inaccurate name, so I can't explain O(∩_∩)O~ I have to say that my far-fetched understanding is that the name derived from jade culture seems to refer to crystal.