Gems en Vogue Final Cut Italy 22" 20mm Lapis Disc Bead Toggle Necklace w/ 2" Extender

Barrel Clasp: Used on most rope chains to make the chain more secure. The barrel clasp looks like part of the chain and twists to get a pendant on and off.

Lobster Claw Clasp: As a traditional clasp style found in bracelets and necklaces, the lobster claw is generally reserved for heavier styles that may need added strength. The closure's shape is more oblong, similar to a teardrop shape, and is controlled by a tip that opens and closes the spring in the clasp.

Magnetic Clasp: A magnetic clasp relies on a strong internal magnet that works to pull both ends of the clasp together. In most cases, a magnetic clasp is used for light to medium weight jewelry pieces that do not put excessive stress on the magnet.

S-Clasp: An S-shaped piece of metal that connects a chain by hooking metal rings on each end of the S-shape.

Slide Insert Clasp: This type of clasp is exactly as it sounds. With a box-like shape that is hollow on the inside, the wearer will slide the nearly-flat tab into the box until it clicks, indicating a secure closure. On some jewelry, a slide insert clasp will be accompanied by a side safety catch, which adds strength and security to the clasp.

Spring Ring Clasp: One of the most common closure types, the spring ring clasp is typically used for light to medium weight bracelets or necklaces. It is round in its design and features a small tip which controls the opening and closing of the spring. The circle then closes around another smaller loop or link at the other end of the strand.

Toggle Clasp: A toggle clasp is a narrow piece of metal, usually designed in the shape of a bar, which is then pushed through a circular ring to act as a fastener. Unlike the lobster claw or spring ring clasps, a toggle clasp is not controlled by a spring. The pretty design is less secure than other closure types, but is usually meant to be a big part of the design and is meant to "show". The clasp is an attractive way to secure a chunkier link bracelet or necklace.

Necklace Sizing
The length of a necklace or chain you buy depends upon a number of factors, including what you will be wearing with it and your neck size.

To measure your neck, wrap a soft, flexible tape measure around the base of your neck. This is the same measurement used for collar sizes in men's shirts. A good rule of thumb is to buy a necklace or chain a minimum of two sizes up from your neck measurement.

Lapis
Lapis is a strong blue microcrystalline rock composed primarily of the mineral lazurite. Its value decreases with the presence of white patches called calcite, while small veins of golden pyrite inclusions are often prized. Top quality lapis lazuli comes from Afghanistan, but small quantities are also found in Siberia, Chile, the United States, Pakistan and Canada. It is one of the most valuable semi-opaque stones and is a relatively soft gem, ranking 5.0-5.5 on the Mohs Scale.

First mined in Afghanistan in 6000 B.C., lapis lazuli was used to heal eye maladies and was thought to help one acquire wisdom and serenity. The Romans believed it was a powerful aphrodisiac, while the Egyptians used lapis for cosmetic purposes and often carved it into vases and figurines. The ancient city of Ur had a thriving trade in lapis lazuli as early as the fourth millennium B.C. The name comes from the Latin word “lapis,” meaning stone, and from the Arabic word “azul,” meaning blue.

In the Middle Ages, lapis was thought to free the soul from error, envy and fear. Used by artists during the Renaissance , ground lapis created a beautiful blue pigment for paintings. The stone was inlaid in the columns of St. Issac's Cathedral and the panels of the Pushkin Palace, both in Petersburg. Today, lapis lazuli is traditionally given as a 9th wedding anniversary gift. It is believed to free the wearer of melancholy and strengthen total awareness, creativity and ESP.