Moscow, Russia
Shipping: worldwide
We work 7 days a week
Orders are accepted
around the clock
Product search
Diameter, mm (1mm - 0,039inch)

Stone sphere balls - full range in stock "Quartz"

Quartz is an extremely common rock-forming mineral on the Mohs hardness scale - value 7. It has clear-crystalline and cryptocrystalline forms, which, in turn, contain various varieties of quartz. Diverse in appearance. In Moscow, in the Historical Museum, there is a staff of an Egyptian pharaoh with a knob made of processed veined quartz - 5 thousand years BC. Quartz is the main component of flints, which were processed and used for work by the Neanderthals. At the same time, a transparent variety of quartz, rock crystal, when processed by non-professionals, can be confused with a diamond.

You can see quartz stone for sale and buy it in the Minerals of Russia online store.

Physical properties of Quartz

Category silicate mineral
(repeating unit)
IMA symbol Qz
Strunz classification 4.DA.05 (oxides)
Dana classification (tectosilicates)
Crystal system α-quartz: trigonal
β-quartz: hexagonal
Crystal class α-quartz: trapezohedral (class 3 2)
β-quartz: trapezohedral (class 6 2 2)
Space group α-quartz: P3221 (no. 154)[4]
β-quartz: P6222 (no. 180) or P6422 (no. 181)
Unit cell a = 4.9133 Å, c = 5.4053 Å; Z=3
Formula mass 60.083 g·mol−1
Color Colorless through various colors to black
Crystal habit 6-sided prism ending in 6-sided pyramid (typical), drusy, fine-grained to microcrystalline, massive
Twinning Common Dauphine law, Brazil law and Japan law
Cleavage {0110} Indistinct
Fracture Conchoidal
Tenacity Brittle
Mohs scale hardness 7 – lower in impure varieties (defining mineral)
Luster Vitreous – waxy to dull when massive
Streak White
Diaphaneity Transparent to nearly opaque
Specific gravity 2.65; variable 2.59–2.63 in impure varieties
Optical properties Uniaxial (+)
Refractive index nω = 1.543–1.545
nε = 1.552–1.554
Birefringence +0.009 (B-G interval)
Pleochroism None
Melting point 1670 °C (β tridymite) 1713 °C (β cristobalite)
Solubility Insoluble at STP; 1 ppmmass at 400 °C and 500 lb/in2 to 2600 ppmmass at 500 °C and 1500 lb/in2
Other characteristics lattice: hexagonal, Piezoelectric, may be triboluminescent, chiral (hence optically active if not racemic)

Code: 3792/72
Yuzhny settlement, Chelyabinsk region, Southern Urals, RF

0.00 $ $468.33

Code: 3793/15
Yuzhny settlement, Chelyabinsk region, Southern Urals, RF

0.00 $ $443.33

Code: 3795/78
Yuzhny settlement, Chelyabinsk region, Southern Urals, RF

0.00 $ $223.33

Code: 3796/43
Yuzhny settlement, Chelyabinsk region, Southern Urals, RF

0.00 $ $236.67

Code: 1382
North Karelia, RF

0.00 $ $266.67

Code: 1383
North Karelia, RF

0.00 $ $93.33

Code: 3794/71
Yuzhny settlement, Chelyabinsk region, Southern Urals, RF

0.00 $ $236.67

I want to receive information about new products