Xuanhua Agate 17.75 ct Oval Cabochon 28.00 x 19.20 x 3.80 mm z627

Xuanhua Agate 17.75 ct Oval Cabochon 28.00 x 19.20 x 3.80 mm z627

Xuanhua agate
This colorful material shows different pattern and occur as nodules generally of a size between 4-6 cm. rarely bigger.

The location is in Xuanhua District, Zhangjiakou, Hebei, China.
Sometimes is possible to find some barite pseudomorph forms. Perfect nodules are sold at quite high price and as far as I know is not treated.