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Boulder Opal 17.88cts

UCGC90

£36.99

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Gemstone attributes
Gemstone
Boulder Opal
Origin
Australia
Carat weight
17.8800Cts (avg)
Size
21.00 x 17.50mm
Family
Opal
Hardness
5.5 – 6.5
Specific Gravity
1.8 - 2.3
Refractive Index
1.39 – 1.46
Crystal Group
Amorphous
Optical Properties
Displays opalescence with 'pin fire' flashes of colour
Care
Wear often and don’t be afraid to get them wet
Cleaning Advice
Warm soapy water
Chemical Composition
SiO2nH2O
Cut
Cabochon
Shape
Cushion
Treatment

Further Details

Find out more about this product

17.88ct Boulder Opal (N)

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