Fire agate is associated with the chalcedony group of microcrystalline quartzes. They are either solid-coloured stones, or have bands or moss-like or dendritic inclusions (agates). The distinctive iridescent colours of fire agate come from layers of iron oxide inside the quartz. This rainbow effect might be presented by cutting in cabochon. Fire agate can be found in Arizona (USA) and Mexico. Iris quartz includes a similar iridescence, but this really is brought on by internal cracks.
Agate happens in nodular masses in rocks for example volcanic lavas. When split open, they reveal a fantastic number of colours and patterns, along with a distinct banding that distinguishes agate from other types of chalcedony (the compact, micro-crystalline number of quartz). Band colours are based on the differing impurities present, although, being porous, agate is usually dyed or stained to improve the natural colour. Agate also happens in several distinct forms. Fortification agate has angularly arranged bands resembling an aerial view of the fortress. Moss agate (or mocha stone) is translucent and colourless, white or grey, with dary, moss or tree-like (dendritic) inclusions. It is almost always cut as thin slabs, or polished as ornaments, brooches or pendants. Agatized wood is fossilized wood which has had its organic matter replaced by agate. One of the most famous area for agates is Idar-Oberstein in Germany, where agate may be collected since 1548. It now imports agates in the huge deposits in Uruguay and Brazil. Moss agate occurs within the Hindustan section of India; also China and the united states. Probably the most famous agatized wood can be found in the Petrified in Mexico, Madagascar, Italy, Egypt, India, China and Scotland. Visit agate meaning for more information.
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