Gagate, also known as jet
, is a hard, lustrous black stone. Naturally, it is a
fossilized coal. Sometimes it is called black amber.
Garnet is a group of minerals that have been used since the Bronze Age as gemstones and abrasives.
Garnets are most often seen in red, but are available in a wide variety of colors spanning the
A gemstone is a mineral, rock (such in the case of lapis lazuli), or petrified material that when
cut or faceted and polished is collectible or can be used in jewelry. Several organic materials
like amber, coral and pearls are also considered gemstones.
Genuine pearl, or natural pearl
, is one that formed naturally within the shell of a
mollusk due to an irritant rather than having the irritant placed into the mollusk by hand
or being made out of plastic.
A geode is a rock whose crystal-filled interior can be hollow or filled. The crystals that
form within the mineral crust of the geode is called druze
. From the outside, geodes
look like rounded, but otherwise ordinary rocks.
An object decorated with a thin layer of gold, gold leaf or gold foil.
Givre beads are beads made of transparent glass fused around a translucent core.
Glyptography is the art of engraving gemstones, making intaglio and cameos. Stones are engraved
using grindstones with powdered emory or diamond as an abrasive.
A yellow precious metal which is valued for its beauty and purity since it does not oxidize
or tarnish like most other metals.
An electrolytic coating with gold, or with an alloy of not less than 10% fineness to a minimum
A gold alloy plate made by soldering, brazing, welding or other means that is not less than 10
karat fineness, where the plating constitutes at lest 1/20th of the weight of the metal in the
An alloy of zinc, tin and copper that results in a yellow the color of gold.
Goldstone is a type of glass made with copper or copper salts in the presence of a reducing flame.
Sometimes gemstone aventurine
is called goldstone
because of golden glitter.
Goshenite is a white or colorless beryl
That is the name of an off-loom bead weaving technique, also known as peyote stitch
A graduated necklace of beads or pearls has beads that 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.
A grain is a unit of weight used for diamonds and natural pearls. Four grains are equal
to one carat.
One of the oldest jewelry design techniques, dating to 2500 BC. Tiny grains of gold or other
metal are stuck to a surface as ornaments.
Grelots are small beads that have an elongated, pendant shape.
Grossular garnet is a type of garnet, resembling a gooseberry. Some of the species are:
- Hessionite is a transparent brown, yellow, orange, or honey-colored variety
- Transvaal Jade is green to gray grossular garnet
- Tsavorite is green to yellow-green grossular
- Uvarovite is an emerald-green grossular garnet
- Pink grossular garnets varieties include xalostocite, landerite, rosolite