The Physical Properties Of Quartz Stone

(1) Brittle.
(2) Has thermoelectric properties.
(3) Refractive index 1.533~1.541, birefringence difference 0.009, dispersion 0.013.
(4) Quartz has strong piezoelectric property, which means that sparks are generated when struck and rubbed with force, which is the method of using flint to ignite.
(5) The common inclusions in quartz are: Hair crystal - mainly rutile. Grass entering crystal - mainly tourmaline; Water gall crystal - there are liquid inclusions in quartz; Blue quartz - containing needle shaped light blue hematite; Milk quartz - turbidity caused by fine water pores; Green quartz - composed of plate-like or fragmented chlorite, sometimes green needle shaped actinolite; Aventurine - quartzite contains green or reddish brown mica flakes inside, also known as brilliant quartz, commonly known as Dongling stone. Common smoky black to dark brown smoky crystals are mainly due to their high content of radioactive uranium and thorium elements.