baddeleyite
baddeleyite crystal from Minas Gerais in Brazil
Detailed sheet
baddeleyite
Its name honors Joseph Baddeley, who identified it in 1892 in some samples coming from Sri Lanka.
This is the basic material used to manufacture synthetic zirconium oxide by the method of autocreuset to 2750 ° C.
CHEMICAL CHARACTERISTICS
ZrO2
zirconium dioxide
PHYSICAL CHARACTERISTICS
Main color
brown
Other colors
yellow
dark color
Color of streak
white, brown
Luster
greasy, vitreous
Hardness
6.5 to 0.0
Density
5.40 to 6.00
Cleavage
perfect
Fracture
conchoidal, uneven
OPTICAL PROPERTIES
Transparency
translucent
Refractive index
2.130 - 2.200
Double refraction
0.070
definite, biaxial (-)
visible double refraction
Yes
Dispersion
forte
Pleochroism
absent
Number of colors
1
Fluorescence
none
CRYSTALS PROPERTIES
prismatic
crystals system
monoclinic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in Sri Lanka, Australia, in the Kola peninsula in Russia, Norway, Italy, Madagascar, Brazil, USA, Canada.
use in jewelry
faceted cut it’s a collection stone
Other
Gems
Venez visitez
notre site web
voillot-joaillier.fr
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