For over 30 years, Gem Treasures has created jewelry with an abundance of personality, celebrating the color of genuine gemstones. Featuring designs meant to expand your jewelry wardrobe with color and dazzling accents – all centered around you. From highly sought-after exotic gems to bold, colorful semi-precious, each stone is carefully selected and curated within a design to offer a unique look to last a lifetime and share with future generations.
All weights pertaining to gemstones, including diamonds, are minimum weights. Additionally, please note that many gemstones are treated to enhance their beauty. View Gemstone Enhancements and Special Care Requirements for important information.
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.
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.
Bracelet Sizing
To measure for a bracelet, wrap a soft, flexible tape measure around your wrist bone. Then, add 3/4" to 1" to that measurement to determine your bracelet size. Generally, 7" is considered a standard women's size and 8" is considered a standard men's size.
Another way to get an ideal fit is to measure the length of a bracelet you own. For bracelets that are to be slipped over the hand, measure the widest part of your hand to ensure the bracelet will fit over it.
Keep in mind that different bracelet styles tend to fit differently depending upon the clasp and materials used. Bracelets with adjustable clasps are usually one size fits all. Those with large beads or stones have less room for your wrist. Also, bracelets with links can usually be shortened by removing one or more links.
Sterling silver, also called fine silver, is a beautifully lustrous cool-toned precious metal favored in fine jewelry among other products. The most reflective of all metals (excluding mercury), sterling silver looks stunning by itself and brings out the best hues in an array of colorful gemstones.
Sterling silver can be polished to a higher sheen than platinum. In fact, Ag, the chemical symbol for silver, comes from a word that means “white and shining.” The surface of silver can boast that shiny, polished appearance, or can be brushed, satin, matte, sandblasted, antiqued or oxidized (chemically blackened).
In order to be called sterling silver, a metal must be made up of a minimum of 92.5% pure silver and 7.5% alloy (meaning other metals), including but not limited to copper and nickel. The alloy is added to pure silver to make the metal more durable, tougher and harder. Sterling silver is designated a fineness of “925.” Pieces with sterling silver may be marked “sterling.”
Finishes on Sterling Silver
Finishing, or plating, is a common treatment with sterling silver. Popular types of plating are rhodium plating, gold plating and anti-tarnish plating. Plating is used to extend the life and sheen of the jewelry. After sizing or buffing a piece of jewelry with a machine, it must be re-plated to restore the finish.
Caring for Sterling Silver
Sterling silver becomes tarnished as the result of a natural chemical process that occurs when sterling silver is exposed to chemicals in the air, rubber, wool and latex. Humidity also plays a role in accelerating tarnishing. It's easy to keep your sterling silver sparkling, though, by taking a few steps to prevent tarnish and other wear and tear.
Pearl:
Often referred to as a gift from the sea, pearl's origin has been an object of folklore throughout history. Early Chinese myths told of pearls falling from the sky when dragons fought. Ancient Persian legend said that pearls were tears of the gods. In classical times, it was believed that pearls were formed when moonbeams lit upon shellfish, while Indian mythology suggested pearls were formed when dewdrops fell from the heavens into the sea.
In truth, pearls are lustrous gems with an organic origin. They are formed inside mollusks such as oysters, clams and mussels when an irritant such as a tiny stone, grain of sand or small parasite enters the mollusk's shell. To protect its soft inner body, the mollusk secretes a smooth, lustrous substance called nacre around the foreign object. Layer upon layer of nacre coats the irritant and hardens, ultimately forming a pearl.
This process of building a solid pearl can take up to seven or eight years. Generally, the thicker the nacre becomes, the richer the "glow" of the pearl and greater its value. While pearls that have formed on the inside of the shell (called blister pearls) are usually irregular in shape and have little commercial value, those that are formed within the tissue of the mollusk are either spherical or pear-shaped and are highly sought-after for jewelry. Most pearls on the market measure 7.0-7.5mm in diameter, but can be found as small as 1mm or as large as 20mm.
Although some pearls are found naturally in mollusks (considered the most valuable), the vast majority of pearls are grown, or cultured, on pearl farms. To instigate this culturing process, a small shell bead, or nucleus, is surgically inserted into the mantle of an oyster. Despite the fact that pearls are harvested in great quantities on pearl farms, producing a quality pearl is an extremely rare event. It is estimated that half of all nucleated oysters do not survive and, from those that do, only 20 percent create marketable pearls.
Since nacre is organic, pearls are quite "soft" and rank only a 2.5-4.5 on the Mohs Scale. The gems are very sensitive and special care should be taken when wearing and storing them.
The value of a pearl is judged by several factors and high-quality pearl strands should feature pearls well-matched in these factors: orient, the lustrous iridescence that's produced when light is reflected from the nacre, should glow with a soft brilliance; the nacre's texture should be clean and smooth, absent of spots, bumps or cracks; the shape of a pearl should be symmetrical and generally the rounder a pearl is, the higher its value; and although pearls come in many different colors (depending on the environment and species of mollusk), the most favored are those that have a rose-tinted hue.
Pearls are cultured in a variety of sizes, shapes and colors. Akoya pearls are the classic round pearls found in most pearl jewelry. They are mainly grown in the waters off Japan and are found in a range of hues, including white, cream, pink and peach. Mabe pearls are grown in Japan, Indonesia, French Polynesia and Australia. They are usually flat-backed and often called blister pearls because they form against the inside shells of oysters rather than within oysters' bodies. Tahitian pearls are grown in French Polynesia and come in a range of colors, including grey and black with green, purple or rose overtones. Because of their large size and unique dark colors, they command very high prices. Also prized for their large size, white South Sea pearls are grown in Australia, Indonesia, the Philippines and other areas of the South Pacific.
Freshwater pearls come in various colors and are grown in bays, lakes and rivers primarily in Japan, China, Europe and the United States (Mississippi River). They are often irregularly shaped and less lustrous than saltwater cultured pearls, making them substantially less expensive. Types of freshwater pearls include Biwa pearls from Lake Biwa in Japan, irregularly shaped baroque pearls and the exceptionally small seed pearls.
Pearls that develop within the soft tissue of mollusks encounter little resistance and therefore grow to be round or "regular" in shape. However, pearls that become lodged in the muscular tissue of shellfish experience resistance, so they free-form into irregular, unusual shapes. These "Baroque" pearls are asymmetrical and are world-renowned for their naturally unique beauty. Baroque pearls were especially prized by jewelers during the Renaissance.
In China, cultured pearls come mainly from freshwater rivers and ponds, whereas Japan is famous for culturing pearls along their saltwater coasts. Black pearls can be found in the Gulf of Mexico and in waters off some islands in the Pacific Ocean. In the warmer waters of the South Pacific, larger oysters produce South Sea cultured pearls and Tahitian black cultured pearls. Cultured pearl industries are also carried out in Australia and equatorial islands of the Pacific. For thousands of years, natural pearls have been harvested from the Persian Gulf, the Red Sea and the coasts of India and Sri Lanka. Natural saltwater pearls are also found in the waters off Indonesia, the Gulf of California and the Pacific coast of Mexico.
Pearls have been treasured throughout ancient folklore and history. Aphrodite, the Greek goddess of love, considered pearls to be sacred. The Greeks prized the gems for their beauty and believed wearing pearls would promote marital bliss and prevent newlywed women from crying. In ancient Rome, pearls were considered the ultimate symbol of wealth and status. The ancient Egyptians were buried with them and Cleopatra favored pearls immensely. It is said that while dining with Mark Anthony, she purposely dropped a pearl into her drink to demonstrate the wealth of her rule.
Today, the pearl is a universal symbol of innocence and purity. It is the birthstone for June and is considered the traditional gift for couples celebrating their 3rd and 30th wedding anniversaries. Many believe the gem gives wisdom through experience, quickens the laws of karma and cements engagements and love relationships. It is also considered to offer the powers of wealth, protection and luck.
The largest pearl in the world is approximately 3" x 2", weighing one-third of a pound. Called the Pearl of Asia, it was a gift from India's Shah Jahan to his favorite wife, for whom he also built the Taj Mahal. Another famous pearl is called "La Peregrina," or "The Wanderer," and is considered to be the most beautiful pearl in the world. Pear-shaped and 1-1/2" in length, it is said that 400 years ago the pearl was found by a slave in Panama, who gave it up in return for his freedom. The pearl turned up in 1969 at a New York auction house. It was purchased by actor Richard Burton for his wife, Elizabeth Taylor.
Larimar
One of the newest gemstones to be discovered and acclaimed, the world's only source of larimar is found in one square mountain kilometer on an island in the Caribbean. This wondrous gem's limited locality makes it one of the rarest gemstones in the world.
The delicacy of mining makes larimar all the more elusive. Generations of island villagers extract the stone by hand, releasing each precious blue gem from an armor of weathered basalt. To look upon larimar is to see the swirling seas of the Caribbean emulated in a palette of ocean blue. Its extraordinary color comes from a mineral composition that creates amazing azure hues. Nature ensures that no two stones are exactly alike.