Carnelian from Uruguay, "always fits" 4mm bullet bracelet.

Carnelian is a flesh to brown-red, translucent to opaque variety of chalcedony. It belongs to the quartz. The element that causes the red color is iron, which is contained in small impurities in the mineral. Heating can cause the color to deepen. Carnelian is named after the Latin carnis, which means "meat". The old Dutch name is carnelian. Carnelian was used in the manufacture of seal stones and jewelry before the dawn of our era. Carnelian was said to protect against strife, toothache and nervous disorders, quell bleeding, lower fever, reduce wrath and bring happiness. Carnelian originates in volcanic and weathering zones and is known from India, Saudi Arabia and Egypt. Important sites are in Brazil, the United States, Australia, Russia, the Czech Republic, Germany and Romania.