moss agate

ID: skos/Commodity/MIN4EU/mossAgate

Item class: Concept

Label (en): moss agate

Label (hu):

Definition (en): Moss agate (also called mocha stone) is a semi-precious gemstone formed from silicon dioxide. It is a form of chalcedony which includes minerals of a green colour embedded in the stone, forming filaments and other patterns suggestive of moss. It also sometimes resembles blue-cheese. The field is a clear or milky-white quartz, and the included minerals are mainly oxides of manganese or iron. It is not a true form of agate, as it lacks agate's defining feature of concentric banding. Moss agate is of the white variety with green inclusions that resemble moss. It occurs - http://en.wikipedia.org/wiki/Moss_agate

Definition (hu):

Concept scheme: Commodity

Broader concept: MIN4EU list of commodities