Agate is a rock consisting primarily of cryptocrystalline silica, chiefly chalcedony, alternating with microgranular quartz. Formula: (repeating unit) SiO2 (silicon dioxide).It is characterized by its fineness of grain and a variety of colors. Although agates may be found in various kinds of host rock, they are classically associated with volcanic rocks and can be common in certain metamorphic rocks.It is hard, retains a highly polished surface finish and is resistant to chemical attack.
|Dimensions of the slice||6.5cm x 2.7cm x 0.4cm|
|Dimensions of the chain||25.5cm|
|Origin||Brazil (circa 2010)|
Buy 1 for R 140.
Zoom for big photo
|Shipping method||Number of items||Cost|
|Collect from South Africa, Pretoria, Sunnyside East||any||R 00|
|Courier to big cities, delivery 2-3 days||1||R 52|
|Courier to a town beyond 30 km from big cities, delivery 4-5 days||1||R143|
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This page has been updated on the 2018-12-05.