Since times of antiquity, all garnet gemstones and many other
red gem varieties that were cut and polished en cabochon, were classified and traded as 'carbuncle'. Carbuncle is not the most glamorous name of all names, especially considering the fact that carbuncle was also used to refer to pus-filled boils. Although carbuncle originally referred only to garnet, as of recent times, any and all red gemstones cut en cabochon can be traded as carbuncle, as long they are natural gems.
Carbuncle originates from the Latin word, 'carbunculus', which alludes to a piece of burning ember or coal. The term may have come around the 16th century, after the discovery of large bright red pyrope garnet deposits were discovered in Bohemia (Central Europe). Red cabochons have historically been used as friendship gems and include pyrope garnet, almandine garnet, carnelian, tourmaline, ruby and spinel. When carbuncle is worn in gemstone jewelry, they are believed to be able to help strengthen and reconcile long lost friendships and or relationships. Cabochon gemstones are very popular jewelry stones, and are favorite amongst jewelers and jewelry designers because they are often much more affordable than their faceted counterparts, and they are very easy to work with. Examples of cabochon jewelry, include gemstone class rings, men's rings, flat-back earrings, pendants, body jewelry (studs and piercings), as well as pins and brooches.