Onyx Peridot Fire Opal Necklaces in 14K Gold

Onyx is the birthstone for Leos and the anniversary gemstone for the 7th year of marriage. Black Onyx is the anniversary gemstone for the 10th year of marriage. Onyx is a variety of the microcrystalline quartz, called chalcedony. The name "chalcedony"" comes from Calcedon or Calchedon, an ancient port on the Sea of Marmara in Asia Minor. Ornamental materials were once mined in that area and it was an active center for trading various stones. Onyx were used widely in the past as bases and handles for gold items, as well as for stone inlay work. Onyx seals were very popular with the Romans, who carved the pattern of the seal in negative relief to give a raised point. They often used stones with several layers, each of a different color, which were then individually carved to produce a different pattern each year. They originally used the onyx name for a variety of marble having white and yellow veins. Onyx is the Greek word for ""claw"" or ""fingernail"" because these veins resemble the ... learn more

Peridot is named after the French word peritot, meaning gold, because the mineral can vary towards this color. Peridot is the birthstone for the month of August. It is also the stone given to celebrate the 16th year of marriage. Peridot has a very long written history. Ancient papyri record the mining of these stones as early as 1500 BC. The main source of peridot in the ancient world was Topazo Island (now Zabargad or St. John's Island) in the Egyptian Red Sea. In Ancient times, peridot stones were used for carved talismans. Island habitants were forced to collect the gems for the Pharaoh's treasury. Legend says that jealous watchers who had orders to put to death any trespassers guarded the entire island. The story continues that the miners worked in the daytime as well as night, as the gems could be found after nightfall due to their radiance. The miners would mark the spot at night for retrieval the following day.... learn more

Mexican fire opals are named for their uniform flaming orange or cherry red body color. They are always very brightly colored, and can be a little bit cloudy to almost perfectly transparent. Transparent specimens have a good luster. Like the traditional opal, fire opals can occasionally display signs of iridescence in very bright light. Fire opals have a very low density, lower than that of glass, with which it is sometimes confused. Fire opals, like other opals, are relatively hard, rating a 5.5 to 6.5 on the hardness scale.... learn more