Both quartz and rock crystal are made up primarily of silicon dioxide. The main difference between them is that rock crystal does not have any significant amount of trace elements that would color it. Quartz does contain coloring trace elements.
The difference is in their chemical composition and crystal structure which gives them different properties.
Pure quartz is a homomogeneous crystal.
compacted
rock crystal
Rock crystal.
There are several differences, the primary one being that on the Mohs hardness scale, diamond is 10, quartz is 8. Quartz crystal is very hard, but diamond is harder.
The difference is in varying concentrations of quarts in each crystal.
what is the difference between an cubic and a tetragonal crystal
The difference is in their chemical composition and crystal structure which gives them different properties.
Quartz vibrates when a voltage is applied between opposite faces of a crystal. The frequency of the vibration depends on the thickness of the crystal, and on the direction of the faces compared to the natural planes in the crystal structure.
Amethyst is a variety of crystal quartz.
Pure quartz is a homomogeneous crystal.
Quartz.
Quartz is silicon dioxide (sand). Diamond is an allotropic form of carbon.
Quartz is a naturally occurring form of silica that often contains impurities.
quartz crystal
Quartz movement is more traditional. Kintetic quartz relies on different principles and is a bit more accurate.