First, Quartz is a natural crystal, and yes they are better than say a glass (manufactured) crystal.
Natural crystals usually have inclusions (small inner flaws and other materials within them) these give your eye and mind something to focus on and you are more likely to achieve the needed state of mind you do your scrying in.
I have know others who use other types of natural crystals including rose quartz, amethyst, onyx, and a lovely piece of amber. They each swear they have better luck with their crystal than with others, so try a few and see what works for you.
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.
ya i found them in my back yard
A natural quartz crystal ball is an expensive item to purchase, and a difficult one to find. One can find one at Bey's Rock Shop, The Magickal Cat, and Best Crystals.
quartz crystal
Quartz.
A Quartz crystal is worth about 20$-35$ an ounce.
mm
The scientific name for quartz crystal is silicon dioxide (SiO2).
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.
Agate, being a cryptocrystalline (microscopic crystal structure) form of quartz, does not have a crystal shape.
Pure quartz is a homomogeneous crystal.