Onyx Lab Sapphire Fire Opal Necklaces in 14K White 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

The sapphire is the birthstone for the month of September. The name sapphire is derived from the Latin word "saphirus" and the Greek word "sapheiros", both meaning blue. Some believe that the name sapphire is derived from its association with the planet Saturn. The name can be roughly be translated to mean "dear to the planet Saturn" in many different languages.... 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

Many different gemstones can be bought in today's market. There are sapphires, opals, rubies, emeralds and more. What you may not know, however, is that all of these gemstones may not be what they appear. Some gemstones on the market are not natural gemstones, and should be marked by the seller as either "lab-created" or "simulated". You may find that some of these so-called "fake" gemstones may be almost as expensive as their natural counterpoints! This may seem suspicious to you, but actually, it is an accepted practice in the jewelry trade, that is, if the "fake" is actually grown in a laboratory, which makes it quite real in fact.... learn more