GLOSSARY OF TERMS
Sample pins – gold samples of various karatage used in the identification process of the karatage of a piece of jewelry.
Alloy – product obtained by melting certain metals together.
Sample water – solution used in the verification process of the karatage of metals.
Gold – yellow metal that is found in its native state in the mountains, in veins or alluvial sands.
White gold – alloy of gold and a white metal, palladium, chromium, zinc.
Gilding -the process by which silver or gold jewels are plated with gold. For example red gold jewelry can be yellow gold plated to provide a new look.
Goldsmith – archaic term used to denote the craft of jewelry.
Rod – the shape of a stone given after cutting and processing it.
Slave bracelets – term used for rigid bracelets.
Brilliant – the cut of a diamond in the form of a double pyramid with a number of 57 or 58 facets.
Carbine – type of fastening; closing system for chains.
Crown – is the top of a polished diamond, above the girdle.
Culet – is the lower facet of the polished stone rising, from which the pavilion rises.
Carat – the unit of measure for the weight of diamonds. Diamonds are weighed with great precision, and the unit of measurement is metric, its abbreviated form being "cts" or "ct". A carat weighs 0,200 gr.
Hardness – used in jewelry, the term represents a resistance to scratches- how the stone’s surface reacts when touched with a hard object.
Ductile – about metals that can be processed into very thin stripes.
Butterfly – clamping system of the earrings. The butterfly is attached to the wire that goes into the ear.
Fire – sparks of colour that we see when we look at a polished diamond that comes into contact with light.
Facet – the cut, polished surface of the stones. For example, the brilliant cut has 57 facets.
Gemology – science which studies stones.
Synthetic gem (synthetic stone) – Stones created by human hand, in laboratory, with properties as faithful as possible to the natural ones.
Natural gem (natural stone) – stone created through natural processes without human intervention.
Jeweler – craftsman who manufactures jewelry.
Inclusion – feature determining the clarity of diamonds, an impurity which is practically closed inside the stone or it threads from its surface towards its inside.
Irregularity – determining characteristic in the clarity of a diamond which is found only on the outer surface of a polished stone.
Karat – index of gold content in its alloys, equal to 24th part of the total mass.
Tear – a special cut of the stone, its shape resembles a tear.
Luster – the way a stone shines in contact with light.
Malleability – the bending and shaping properties of metal.
Marquise – oval – sharpened stone cut.
Monogrammed – a letter or another symbol applied on a flat surface.
Mounting – fastening of a stone in a jewel.
Mark – symbol stamped on jewelry. It can be linked to karatage, the manufacturer or the country of origin.
Noble metals – generic name for gold, silver and platinum.
Organic – material that used to be a alive once or which has been produced by a living organism (plant or animal): pearls, coral, ivory, amber.
Opaque – Light does not penetrate it at all. A brick wall is opaque.
Pave – a certain style of mounting stones in a jewel.
Pavilion – the bottom of a faceted diamond, the part that can be found under girdle.
Precious stones – a well-defined class in gemology, which includes diamonds, rubies, sapphires and emeralds.
Sample stone – stone also known as stone Lidia, of black colour, polished through the prismatic system, of a very increased hardness, known for its resistance to acids, used to perform verification of karatage of precious metals.
Platinum – precious metal with white colour – grey, tough, shiny, malleable and ductile, stainless, resisting heat and the action of acids.
Goblet – Bowl of different shapes and sizes, with a wide opening, used in various ceremonies.
Girdle (or waist)-is a narrow section around a polished diamond that makes the link between the crown and the pavilion of the diamond and is used as the fixing point of the gem in the jewelry.
Biza rail – is the rail that continues and supports the head of the ring.
Glow – is created by the combination realized by white light reflected from the surface and from the inside of a polished diamond.
Peg – cylindrical or tapered metal rod, used for joining two pieces of metal.
Scintillation – sparks of light that we see when a diamond or the light source is in motion when it is observed.
Transparency – the degree of light intensity which passes through an object.
Translucent – light becomes diffused as it enters through a material. Frosted glass is translucent.
Link – a round fastening which may be attached or included in the clamp.