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Product Description
Brazilian Agate Polished Stone Slab
Lovely Brazilian Agate slabbed and polished on one side.
This semiprecious translucent gemstone slab is 4.3 inches long by 3.9 inches wide and 5 mm thick.
Brazilian Agate is well-known for its vibrant colors and unique banding patterns. Brazil is one of the largest producers of agate, particularly in the southern regions. There are at least 15 major Brazilian Agate-producing areas in the country of Brazil. 12 of these are located in the 5 most southeastern states of the country, Rio Grande do Sul. Other areas include Santa Catarina, Paraná, Sao Paolo, and Minas Gerais. Two other areas are in the state of Bahia in east central Brazil and another located in the state of Roraima in the extreme northwest.
The agates from Brazil are mostly mined from decomposed volcanic ash and basalt from the late Permian age (248-275 million years ago).
Agate is a chalcedony quartz that forms in concentric layers in a wide variety of colors and textures. Each individual agate forms by filling a cavity in host rock. As a result, agate often is found as a round nodule, with concentric bands like the rings of a tree trunk.
