Frenger Lapidaire - gemstone cutting, custom cut gemstones, opal

Characteristics

-Crystal system : Amorphe

-Chemical Composition : SiO2nH2O : Dioxyde silicium hydreux

-Colors : White, blue, orange, red, yellow, gray, green, black

-Hardness : 5.5 - 6.5

-Refractive index : 1.44 - 1.46

-Dispersion : None

Fire opal
Locality : Brazil
Dimensions : 9,6mm
Color : Orange
Clarty : VS
Brightness : Excellent
Weight : 2,75 carats
Price : 120 € (44€/ct)

Fire opal
Locality : Brazil
Dimensions : 8,5mm
Color : Clear yellow
Clarty : IF
Brightness : Excellent
Weight : 1,78 carats
Price : 45 € (25€/ct)