Turitella (Carnelian Turitella) from Assa, located in Morocco, has become Agate.

Carnelian is a red meat to brown, translucent to opaque chalcedoonvariëteit. It belongs to the quartz. the element that the red color caused, is iron in which small impurities is in the mineral. By heating can deepen the color. Carnelian is named after the Latin carnis, which means "flesh." The old Dutch name is carnelian. Carnelian was already before the beginning of our era, used for the manufacture of seal stones and jewelery. They claimed carnelian offered protection against strife, toothache and nervous disorders, bleeding stilt, lowers fever, reduces anger and brings happiness. Carnelian occurs in volcanic and weathering zones and is known from India, Saudi Arabia and Egypt. Important sites are located in Brazil, the United States, Australia, Russia, Czech Republic, Germany and Romania.