Carbuncle (gemstone) Carbuncle (gemstone) A carbuncle is any red gemstone, most often a red garnet. The word occurs in four places in many English translations of the Bible. The English King James translation is a rendering of the Hebrew Masoretic text (Old Testament) and Greek Textus Receptus (New Testament). "Carbunculus" is a word used in Latin for a small coal (or charcoal), and also for any of a number of precious or semi-precious stones, especially those of a red color.; Jerome apparently chose the term because of its similarity in meaning to the Septuagint's ἄνθραξ ("anthrax" meaning "coal"), which was in turn
Garnet jet cutting. The remaining garnet pieces that are finer than 200 mesh (74 micrometers) are used for glass polishing and lapping. Regardless of the application, the larger grain sizes are used for faster work and the smaller ones are used for finer finishes. There are different kinds of abrasive garnets which can be divided based on their origin. The largest source of abrasive garnet today is garnet-rich beach sand which is quite abundant on Indian and Australian coasts and the main producers today are Australia and India. This material is particularly popular due to its consistent supplies, huge quantities and