Glamorous Red Onyx Jewelry
Red Onyx jewelry is a parallel-banded variety of chalcedony, which is a silicate mineral, mostly made up of calcite. The term “chalcedony” comes from Calcedon, which was an ancient port on the Sea of Marmara in Asia Minor. All types of chalcedony are nothing but cryptocrystalline silica. Agate and Onyx are both varieties of layered chalcedony; they only differ in the form of the bands – agates have curved bands, whereas onyx has parallel bands.Red Onyx is the birthstone for the zodiac of Leo, and it is the anniversary gemstone for the 7th marriage anniversary.
