Dolerite - (from Greece "doleros" - deceptive), magmatic effusive or intrusive rock (on small depth), having structure of basalt.
It is characterized by holocrystalline, coarse-grained dolerite (or ophite) structure (the unit of pyroxene, it is frequent together with olivine, as isometric grains carries out angular sites between prisms of plagioclase).
It is formed as a result of slow hardening of basalt melt in the central parts of large lave streams or in veins.
In construction it is applied as a piece stone and to manufacturing rubble.
Also dolerite is used as ornamental gemstone with combinations with other colored gemstones such as jasper, charoite, rhodonite and so on for accenting the pattern of these gemstones.
In our site you can see the concrete examples of such combination in the directories:
jewelry boxes,
candelabrums,
desk sets
and so on.