Mozambique Garnet produces a deep and powerful red color. It's moderately brilliant and has a reputation for being affordable. It's one of the few genuine stones readily available in cabochon, facetted or a hybrid cut.
Garnet's hardness rating falls between 6.5 and 7.5 out of 10. For these reasons Mozambique Garnet is a more than decent choice for the center of your class ring.