Zhou Nan 1st Street, Zhou Nan Road, Haizhu District, Guangzhou. Guangzhou chalcedony wholesale market is a large chalcedony wholesale market and the largest one in Guangzhou. According to Baidu map, Guangzhou chalcedony wholesale market is located in Zhou Nan 1st Street, Zhou Nan Road, Haizhu District, Guangzhou. Chalcedony is a mineral, also known as "chalcedony". Chalcedony is actually a kind of timeliness, SiO? The generic name of aphanitic is a variant of chronotropic.