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Gallery
A strip of metal that is
perforated with a decorative pattern.
Garnet
Garnets are any of a group of semi-precious
silicate stones that have wide range in color from red to green
(garnets occur in all color but blue). Some garnets used as
gemstones also. Red garnet is the birthstone for January. Garnet
has a hardness of 6-8 and a specific gravity of 3.5 – 4.3.
Gemstone
Also called a precious stone is
a mineral that is valuable, rare and often beautiful. A few
organic materials, like amber, coral and pearls are also
considered gemstones.
GIA
Abbreviation for the Gemological Institute of
America.
Gipsy Setting
A recessed setting in
which the stone is sunk into the metal. Stone often has engraved
designs around especially star patterns, hence this setting is
also called “star setting.”. This type of setting was developed
in the late 1800’s and was often used for rings.
Girandole
A kind of earning or brooch
in which three pearls, stones or pendants hang from a large
stone. The central drop is usually larger than the other
pendants.
Girdle
The girdle is the widest perimeter of a
gemstone.
Glyptography
An art of engraving
gemstone, making intaglio and cameos. Stones are engraved using
grindstones with powdered Emory or diamond as an abrasive.
Gold
One of the most treasured metal it is very soft
when pure (24 Kt.). Gold is the most malleable (hammerable) and
ductile (able to be made into wire) metal. Usually Gold is
alloyed (mixed with other metals, usually silver and copper) to
make it less expensive and harder. The purity of gold jewelry is
measured in karats. Some countries hallmark gold with a
three-digit number that indicates the parts per thousand of gold.
Alloyed gold comes in many colors like Yellow, White, Pink (rose), Green
etc. and it is rated in Karat like 24 Kt. – 100% Gold, 18 Kt. – 75% Gold, 14 Kt. - 58.3% Gold
10 Kt. – 41.7% Gold.
Gold Dore
A
bar of semi-purified gold (e.g. bullion). After being mined, the
first stage in the purification process of the gold are produces
a cast bar (gold dore) that is approximately 90% gold. The other
10% is mostly metals like silver and copper.
Gold Filled
abbreviated G.F. or written as
“double dore” this type of jewelry is made of a thin outer layer of gold atop
a base metal. For example, jewelry marked 1/20 G.F. 12 kt. Is at
least 1/20th gold and is layered with 12 karat gold.
Gold plated
Gold – plated metal has a very thin layer of
gold on the surface, usually applied by the process of
electroplating. Pieces that are gold plated are often marked
G.E.P.
Graduated
A necklace of beads or pearls in which the
beads go from a small size in the back of the neck and
gradually increase in size to a maximum in the front of the
necklace.
Grain
A unit of weight used for
diamonds and natural pearls. Four grains are equal to one carat.
Granulation
A method of decorating metal
with tiny metallic spheres. In this method small beads of metal are soldered to
the surface to form a pattern.
Grelot
Small beads with an
elongated, pendant shape.
Guilloche
An enameling type in which translucent enamel (fused glass) is
applied over a metal surface that has been engraved.
Gypsy Ring
known as spelled gypsy also, it is a ring
with a recessed stone or stone. Also known as “star setting”.
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