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Diameter, mm (1mm - 0,039inch)

Fluorescent Minerals (UV) "Chalcedony"

Chalcedony is a cryptocrystalline variety of quartz. It has a fine fiber structure. It has many varieties, the color of which varies greatly: carnelian, carnelian, sard, heliotrope, chrysoprase, sapphirine (not to be confused with the mineral sapphirine). Used in jewelry. Patterned chalcedony is called agate, black-and-white striped chalcedony is called onyx. Pseudo-stalactites of chalcedony are especially valued among collectors. Known since ancient times. Widely used in ancient Rome and Greece.

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

Physical properties of Chalcedony

General
Category Oxide minerals, quartz group
Formula
(repeating unit)
Silica (silicon dioxide, SiO2)
Crystal system Trigonal or monoclinic
Identification
Formula mass 60 g/mol
Color Various
Cleavage Absent
Fracture Uneven, splintery, conchoidal
Mohs scale hardness 6–7
Luster Waxy, vitreous, dull, greasy, silky
Streak White
Diaphaneity Translucent
Specific gravity 2.59–2.61
Code: 2979
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
76*33*33mm

0.00 $ $43.64

Code: 2980
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
75*27*15mm

0.00 $ $30.91

Code: 2982
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
67*34*27mm

0.00 $ $18.18

Code: 2914
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
58*35*16mm

0.00 $ $16.36

Code: 2922
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
24*22*15mm

0.00 $ $9.09

Code: 2924
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
32*21*18mm

0.00 $ $9.09

Code: 2930
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
39*33*21mm

0.00 $ $12.73

Code: 2934
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
102*19*15mm

0.00 $ $25.45

Code: 2935
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
108*43*37mm

0.00 $ $49.09

Code: 2941
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
91*56*45mm

0.00 $ $72.73

Code: 1981
Golutvin, Moscow region, RF
77*47*53mm

0.00 $ $12.73

Code: 2967
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
63*42*36mm

0.00 $ $25.45

Code: 2969
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
73*45*33mm

0.00 $ $34.55

Code: 2972
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
51*42*25mm

0.00 $ $30.91

Code: 2976
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
49*29*23mm

0.00 $ $10.91

Code: 2978
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
77*50*24mm

0.00 $ $43.64

Code: 2915
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
114*97*46mm

0.00 $ $16.36

Code: 2917
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
58*35*15mm

0.00 $ $10.91

Code: 2923
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
30*27*12mm

0.00 $ $5.45

Code: 2925
Staritskij Rajon, Tverskaya Oblast, Moscow region, RF
27*22*18mm

0.00 $ $6.91

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