Hair or Hairwork
Jewelry
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jewelry made of locks of hair; usually made from a deceased loved one's hair.
Popular in the 1800's.
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Hallmark
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marks stamped on jewelry throughout much of the world to indicate purity of
metal.
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Hammered
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a decorating effect describing jewelry that has been hammered making dents
or decorations in metal
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IGI
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International Gemological Institute (IGI) is the largest independent gem
certification and appraisal service in the United States.
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Inclusion
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particle of foreign matter contained within a stone or bead. Sometimes on
purpose for decorative purposes. Also an imperfection or flaw in a diamond
or gemstone.
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Inlay
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piece of material partially embedded in another material
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Intaglio
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decoration where design is cut into the surface. Many times a carved gem
where the design is created by incising into the stone making a negative
pattern.
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Iridescent
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displaying many changing colors, caused by light reflection off the jewel or
bead
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Jade
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semi-precious stone. Often green and used in cabochons in jewelry.
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Japanned
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a hard, durable black finish on jewelry settings
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Jasper
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common type of quartz found in many colors, especially shades of brown and
red. Often with marbling or speckled appearance. Hardness of 6.5 on Mohs
scale
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Jelly Belly
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piece of jewelry (usually a pin) that has a clear Lucite or glass center.
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Jet
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fossilized coal. Lightweight and often imitated. Opaque black or brownish
black material that was popular in Victorian mourning jewelry.
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Jewel (as in 17 jewel
watch)
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synthetic sapphires or rubies that act as durable bearings for gears of a
mechanical watch.
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Jewellery
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U.K. spelling of the word "jewelry"
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Jonquil
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a very pale yellow colored rhinestone
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Juliana
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style of jewelry manufactured by DeLizza & Elster company in the 1950's and
1960's that were unsigned. Pieces have plentiful colored rhinestones of
various shapes, with little metalwork showing. Highly prized by collectors.
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Karat
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unit for indicating the gold content on a 0 to 24 scale. For example, Pure gold
is 24 karats, 18 karat gold is 750 parts out of 1,000 parts gold, and 14 karat
gold is 585 parts out of 1,000 parts pure gold.
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