Zonder Minimumprijs Opaal - 2.03 ct - ALGT (B)
Nr. 82769097
Verkocht
Eindbod
€ 110
3 weken geleden
Natuurlijk opaalwit/grijsachtig + kleurenspel Opalescentie - 18.49 ct
ALGT REPORT 86308501
No indication of treatment.
Species ..................................................................................... Natural Opal
Variety ....................................................................................... Crystal Opal
Shape & Cutting Style ............................................... Oval, Cabochon
Measurements ............................................ 25.13 x 16.09 x 8.98 mm
Carat Weight ........................................................................... 18.49 Carat
Color ................................................. White (Grayish) + Play of Colors
Transparency .......................................................................... Translucent
Optical Effect ........................................................................ Opaliscence
No indication of treatment.
Chemical Composition .................................................... SiO2·nH2O
Crystal System .................................................................. Amorphous
Mohs Hardness ..................................................................... 5.0 – 6.0
Specific Gravity .................................................. 1.95 – 2.25 g/cm3
Optical Character ........................................... Isotropic, Aggregate
Refractive Index ......................................................... 1.370 – 1.475
Nr. 82769097
Verkocht
Natuurlijk opaalwit/grijsachtig + kleurenspel Opalescentie - 18.49 ct
ALGT REPORT 86308501
No indication of treatment.
Species ..................................................................................... Natural Opal
Variety ....................................................................................... Crystal Opal
Shape & Cutting Style ............................................... Oval, Cabochon
Measurements ............................................ 25.13 x 16.09 x 8.98 mm
Carat Weight ........................................................................... 18.49 Carat
Color ................................................. White (Grayish) + Play of Colors
Transparency .......................................................................... Translucent
Optical Effect ........................................................................ Opaliscence
No indication of treatment.
Chemical Composition .................................................... SiO2·nH2O
Crystal System .................................................................. Amorphous
Mohs Hardness ..................................................................... 5.0 – 6.0
Specific Gravity .................................................. 1.95 – 2.25 g/cm3
Optical Character ........................................... Isotropic, Aggregate
Refractive Index ......................................................... 1.370 – 1.475
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