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A necklace is an article of "jewelry that is worn around the "neck. Necklaces may have been one of the earliest types of adornment worn by humans. Necklaces often serve "ceremonial, "religious, "magical, or "funerary purposes. They are also often used as symbols of wealth and status, given that they are commonly made of precious metals and stones.
The main component of a necklace is the band, "chain, or cord that wraps around the neck. These are most often rendered in precious metals such as gold, silver, and platinum. Necklaces often have additional attachments suspended or inset into the necklace itself. These attachments typically include pendants, lockets, amulets, crosses, and precious and semi-precious materials such as "diamond, "pearls, "rubies, "emeralds, "garnets, and "sapphires.
Prehistoric peoples often used natural materials such as feathers, bone, shells, and plant materials to create necklaces, but by the "Bronze Age metallic jewelry had replaced pre-metallic adornments. Necklaces were first depicted in the statuary and art of the "Ancient Near East, and early necklaces made of precious metals with inset stones were created in Europe.
In "Ancient Mesopotamia, "cylinder seals were often strung and worn as jewelry. In "Ancient Babylon, necklaces were made of "carnelian, "lapis lazuli, "agate, and "gold, which was also made into gold "chains. "Ancient Sumerians created necklaces and beads from gold, silver, lapis lazuli and carnelian. In "Ancient Egypt, a number of difference necklace types were worn. Upper-class Ancient Egyptians wore "collars of organic or semi-precious and precious materials for religious, celebratory, and funerary purposes. These collars were often ornamented with semi-precious, glass, pottery, and hollow beads. "Beads made from a variety of precious and semi-precious materials were also commonly strung together to create necklaces. Gold that was fashioned into stylized plant, animal, and insect shapes were common as well. "Amulets were also turned into necklaces. In "Ancient Crete necklaces were worn by all classes; peasants wore stones on flax thread while the wealthy wore beads of agate, "pearl, carnelian, "amethyst, and "rock crystal. Pendants shaped into birds, animals, and humans were also worn, in addition to paste beads.
In "Ancient Greece, delicately made gold necklaces created with "repoussé and plaited gold wires were worn. Most often these necklaces were ornamented with blue or green enameled rosettes, animal shapes, or vase-shaped pendants that were often detailed with fringes. It was also common to wear long gold chains with suspended "cameos and small containers of perfume. New elements were introduced in the "Hellenistic period; colored stones allowed for poly-chromatic pieces, and animal-head "finials and spear-like or bud shaped pendants were hung from chains. "Ancient Etruscans used "granulation to create granulated gold beads which were strung with glass and faience beads to create colorful necklaces. In "Ancient Rome necklaces were among the many types of "jewelry worn by the Roman elite. "Gold and "silver necklaces were often ornamented with foreign and semi-precious objects such as "amber, "pearl, "amethyst, "sapphire, and "diamond. In addition, ropes of pearls, gold plates inset with enamel, and lustrous stones set in gold filigree were often worn. Many large necklaces and the materials that adorned the necklaces were imported from the "Near East.
Later in the empire, following "barbarian invasions, colorful and gaudy jewelry became popular. In the "Byzantine era, ropes of pearls and embossed gold chains were most often worn, but new techniques such as the use of "niello allowed for necklaces with brighter, more predominant gemstones . The Early Byzantine Era also saw a shift to distinctly "Christian jewelry which displayed the new Christian iconography.
2000 B.C.E- 400 C.E: Bronze amulets embossed with coral were common. In "Celtic and "Gallic Europe, the most popular necklace was the heavy metal "torc, made most often out of bronze, but sometimes out of silver, gold, or glass or amber beads.
400 C.E.- 1300 C.E:
Early European "barbarian groups favored wide, intricate gold collars not unlike the torc. "Germanic tribes often wore gold and silver pieces with complex detailing and inlaid with colored glass and semi-precious stones, especially garnet. Anglo-Saxon and Scandinavian groups worked mainly in silver, due to a deficit of gold, and wrought patterns and animal forms into neck-rings. In the "Gothic period necklaces were uncommon, though there are a few records of diamond, ruby, and pearl necklaces.  It was not until the adoption of lower necklines later in the "Middle Ages that necklaces became common.
1400 C.E.-1500 C.E: During the "Renaissance it was fashionable for men to wear a number of chains, plaques, and pendants around their necks, and by the end of the 15th century the wealthiest men would wear great, shoulder covering collars inlaid with gems. Women typically wore simpler pieces, such as gold chains, or strung beads or pearls. By the end of the period, larger, more heavily adorned pieces were common among the wealthy, particularly in Italy.
1500-1600 C.E: Long pearl ropes and chains with precious stones were commonly worn. In the latter half of the century, natural adornments, such as coral and pearl, were joined with enamel and metals to create intricate pendants. Heavily jeweled, delicately framed cameo pendants were popular as well. "Chokers, last worn commonly in "antiquity, also made a resurgence at this time.
1600-1700: Few men in the "Baroque period wore jewelry, and for women necklaces were unsophisticated, often a simple strand of pearls or delicately linked and embellished strands of metal with small stones. Later in the century, after the invention of new diamond cutting techniques, priority was for the first time given to the jewels themselves, not their settings; it was common for jewels to be pinned to black velvet ribbons. Miniatures also grew in popularity, and were often made into "portrait pendants or "lockets.
1700-1800: Portrait pendants were still worn, and in extravagantly jeweled settings. The newly wealthy "bourgeoisie delighted in jewelry, and the new imitation stones and imitation gold allowed them more access to the necklaces of the time. In the early part of the century, the dominant styles were a velvet ribbon with suspended pendants and the rivière necklace, a single row of large precious stones surrounded by other precious stones. By mid-century colorful, whimsical necklaces made of real and imitation gems were popular, and the end of the century saw a neo-Classical resurgence. In the "Age of Enlightenment gowns often featured a neck ruffle which women accented with neck ribbons rather than traditional necklaces, but some women did wear "chokers inlaid with rubies and diamonds. Seed pearls were introduced to the United States during the "Federalist Era, leading to an increase in lacy pearl necklaces.
1800-1870: The low necklines of the "court gowns fashionable at this time led to the use of large necklaces set with precious jewels. In "Napoleon's court that ancient Greek style was fashionable, and women wore strands of pearls or gold chains with cameos and jewels.  In the "Romantic period necklaces were extravagant: it was fashionable to wear a tight, gem-encrusted collar with matching jewel pendants attached and rosettes of gems with pearl borders. It was also common to wear jeweled "brooches attached to neck ribbons. Some necklaces were opulent that they made to be dismantled and reconfigured into a shorter necklace, brooches, and a bracelet. Highly embellished Gothic style necklaces from England reflected the crenelations, vertical lines and high relief of the cathedrals."Empress Eugénie popularized bare "décolletage with multiple necklaces on the throat, shoulders, and bosom. There was also an interest in antiquity; mosaic jewelry and Roman and Greek necklaces were reproduced. Machine made jewelry and electroplating allowed for an influx of inexpensive imitation necklaces.
1870-1910: The "Edwardian era saw a resurgence of pearl necklaces, in addition to a dog-collar style of necklace made of gold or platinum with inset diamonds, emeralds, or rubies. The "Art Nouveau movement inspired symbolic, abstract designs with natural and animal motifs. The materials used - glass, porcelain, bronze, ivory, mother of pearl, horn, and enamel - were not used for their value, but for their appearance. 
1910-1970: "Chanel popularized "costume jewelry, and ropes of glass beads were common.The "Art Deco movement created chunky, geometric jewelry that combined multiple types of gems and steel. By the 1960's costume jewelry was widely worn, which resulted in seasonal, ever-changing styles of necklaces and other jewelry. Real jewelry that was common in this period included wholly geometric or organically shaped silver necklaces, and precious gems set in platinum or gold necklaces inspired by the time of the "French Empire. "Love beads (a single strand of stone or glass beads) and pendant necklaces (most often made of leather cords or metal chains with metal pendants) popularized and worn mostly by men.
Necklaces are typically classified by length .