Étiquette : Most beautiful opal

+

The most beautiful and the most expensive rocks: Opal (2)

Image source : opel.shoutwiki.com Image source: commons.wikimedia / Didier Descouens Image source : opel.shoutwiki.com Image source: commons.wikimedia / Dpulitzer Title image source: commons.wikimedia / JJ Harrison Look at the most beautiful opals and read opal info, here

+

The most beautiful and the most expensive rocks: Opal

Beauty images, for you Rocks OPAL The most beautiful and the most expensive rocks Image source: opel.shoutwiki.com An opal is a mineral composed of hydrated silica (…), 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% depending on the variety (…)It is made up of three very distinct … Lire la suite The most beautiful and the most expensive rocks: Opal