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Fortification Agate Bowl


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Fortification agate freeform bowl exhibiting gemy quartz growth in a natural cavity, this ceased to grow out completely and fill the geode in the igneous volcanic vent, created by gaseous actions in the earths crust. Read the full description below...

Type: Quartz form of Chalcedony, Agate.
Formula: Silicon dioxide: Si02 (Chalcedony, micro-crystalline quartz)
Origin: Mahajanga jungle, Madagascar.

Approximate measurements.
Height: 6.74 cm
Width: 13.89 cm
Depth: 11.4 cm

Approximate weight: 0,979 g

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The golden toffee coloured fortification agate exhibits very well verso the typical banding, also quartz and chalcedony veins run through the agate hard stone. An extremely attractive opaque banded stone object. Created in a free form way, the artisan using nature to determine the outcome of the hand carved bowl.

Silicon dioxide in a crystalline form is quartz. The tube or eye agate, referring to the unique patterning of this semi precious quartz, which is also formed as a banded chalcedony and is naturally created in nature, chalcedony consisting of twisted crystal fibres which delight in there colour and numerous varied forms. The composition of these forms of agates is complex and leads to the many and varied types which are found all around the world.

Interesting mineral fact. The hardness of minerals is gauged by a scale of hardness developed by an Austrian mineralogist Fredreich Mohs. The arbitrary scale is that of on a number scale of one to ten, on a given place of any mineral that will scratch those of a lower hardness. As a diamond will scratch glass, Topaz for example will scratch Agate. Agate is a chalcedony placed on the Mohs scale between six and seven. Some Agates have been claimed to be of a greater hardness, as high as nine on the Mohs scale.

Agates are formed by volcanic action, agates develop in gaseous cavities within lava and may also be found as replacement mineral in sedimentary rock layers and clay stones. The Romans coveted agates and they are mentioned in text of the ancients. Agates have been discovered in use as adornments as long ago as seven thousand years and have been collected in modern times with intent by the victorians since around the turn of the nineteenth and twentieth century.

The beauty of agates is obvious and is exhibited in the variety of colours, multitude of banding and other forms within the banded and varigated agates which have recently been created into our range of finely polished freeform bowls. Freeform relates to the artisans use of the free flowing undulations of the raw agate material. Allowing nature to determine the shape and outcome of the finished object. The quality of the semi precious agate from Madagascar is exceptional. Our tactile range of superb agate bowls will delight and intrigue on sight.

Additional Information

Age Triassic
Origin Madagascar
Colour Gold