Main centres: | 1-3 business days |
Regional areas: | 3-4 business days |
Remote areas: | 3-5 business days |
Also known as jaspis in Afrikaans and Dutch.
is a variety of quartz. It is opague and its colors are usually red, yellow, brown; sometimes green; rarely blue. It is not a scarce gemstone.
Chemistry | SiO2 (Silica with varying impurities) |
Crystallography | hexagonal |
Refractive index | 1.54-2.65 |
Hardness | 6.5-7 |
Specific gravity | 2.5 to 2.9 |
Cleavage | indiscernible |
Features
Weight | 657 grams |
Dimensions | 7.0cm x 6.1cm x 5.5cm (about the size of a tennis ball) |
Treatment | It is not polished finely, tumbled only |
Origin | South Africa, Pretoria, discovered in my backyard |
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