sard(n = noun.substance) sardine, sardius - a deep orange-red variety of chalcedony;
is a kind of calcedony, chalcedony

   A variety of carnelian, of a rich reddish yellow or brownish red color. See the Note under Chalcedony. [1913 Webster]

sard, n. a yellow or orange-red cornelian.

Etymology:
ME f. F sarde or L sarda = LL sardius f. Gk sardios prob. f. Sardo Sardinia

N  jewel, jewelry, jewellery, bijoutry, bijou, bijouterie, trinket, fine jewelry, costume jewelry, junk jewelry, gem, gemstone, precious stone, necklace, bracelet, anklet, earring, locket, pendant, charm bracelet, ring, pinky ring, carcanet, chain, chatelaine, broach, pin, lapel pin, torque, diamond, brilliant, rock, beryl, emerald, chalcedony, agate, heliotrope, girasol, girasole, onyx, plasma, sard, sardonyx, garnet, lapis lazuli, opal, peridot, tourmaline, chrysolite, sapphire, ruby, synthetic ruby, spinel, spinelle, balais, oriental, oriental topaz, turquois, turquoise, zircon, cubic zirconia, jacinth, hyacinth, carbuncle, amethyst, alexandrite, cat's eye, bloodstone, hematite, jasper, moonstone, sunstone, pearl, cultured pearl, fresh-water pearl, mother of pearl, coral, jeweler, gemologist, minerologist, lapidary, lapidarian, gemology, gemmology, minerology, bejeweled, diamond, (gemstones), gemological.