Opal from Welo, Ethopia
€120.00Price
Opal from Welo, Ethopia
Very beautiful blue color with sublime multicolored iridescence !
Size: 3.7cm by 1.6cm by 1.6cm for 6gr
Video: https://www.youtube.com/watch?v=p_RHuiHfoiw
Definition :
An opal is a mineral composed of hydrated silica with the formula SiO2 n H2O, with traces of uranium, magnesium, calcium, aluminum, iron, arsenic, sodium and potassium. The water content is usually between 3 and 9 % ; it can reach 20 % according to the varieties. It is a very popular mineral in jewelry !
