Onyx Alexandrite Tanzanite Necklaces in 14K Yellow 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

Alexandrite is the birthstone for June (along with the pearl) and the Anniversary stone for the 55th year of marriage. It is also considered Friday's stone, or the stone of "Friday's Child." It is an extremely rare gemstone and a reasonably modern one to boot. It does not share the ancient history and lore of most other gems because it was first discovered in the 19th Century. The name Alexandrite comes from the fact that the gemstone was first found in the emerald mines near the Tokovaya River in Russia's Ural Mountains in 1830, on the day of Prince Alexander II of Russia's birthday. The story of the stone's discovery goes like this: Miners were working alone in the mountains one day, collecting emeralds. One miner gathered some stones, which looked like emeralds, and took them back to the camp at the end of the day. But in the campfire's light, the stones shone a brilliant shade of red! The miners were perplexed. When morning came, and they saw that the stones were green again in the... learn more

Tanzanite is a member of the mineral family zoisite, which has been known about for nearly two centuries. Zoisite occurs in a number of varieties, the most sought after being tanzanite. This mineral family was named zoisite in 1805, some time after the Austrian scientist Baron Siegmund Zois von Edelstein (1747-1819) had identified the mineral in the Saualpe Mountains of Carintha, Austria. Siegmund Zois von Edelstein operated an iron mine in the Karawanken Mountains in Karnten Austria and encountered the mineral on his own property. Centuries later, the discovery of a bright blue transparent variety that we now know as tanzanite, created a lot of excitement in the specialist world.... 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