Precious metals

métaux précieux

THE PRECIOUS METALS

Gold, platinum, silver, vermeil, find in detail explanations on their compositions, recognize the awls,
the use of these metals in jewelry and a special section on the various qualities and the origins of the silver.

 

THE VARIOUS METALS

The metals the most used in jewelry are the gold, the silver, the platinum, the vermeil and the steel. The copper, the nickel, the zinc, the manganese can be used in components of alloys. Usually the cadmium and the zinc serve as elements of weld. The lead, as for him gives an aspect old-looking and oxidized to the silver.
 

THE GOLD

 
PURE GOLD 24K
 
100% gold allied to no other metal, the pure gold is enough little used in jewelry, its soft consistency is elastic does not lend itself easily to all the modelling. The pure gold will rather be poured in the form of ingots or of impressive jewels, the fine works generally consist of golden alloys.
 
GOLD 750/*** 18K
 
Gold 750 /1000th is an alloy containing 75% of fine gold, giving it the first place in the wear resistance of time, corrosion, breakage and scratches.
According to the chosen metal in the alloy, the color of the gold varies:
yellow gold : 75% pure gold, 12.5% silver, 12.5% copper.
rose gold : 75% pure gold, 5% silver, 20% copper.
red gold : 94.5% pure gold, 0% silver, 5.5% copper.
white gold (or white) : 75% pure gold, 15% silver, 10% copper.
 
GOLD 585/*** 14K
 
The 585/1000th gold is less common. It was very used in Italy, in Spain, in England and in other countries of Europe but few in France. Since the opening of Europe in 1993, the gold 14k is authorized in the sale and manufacturing in the hexagon. It consists in 58.5 % of pure gold. Very solid, it is perfectly advisable in the small works, often used for the clasps of jewels in cultured pearls.
 
GOLD 375/*** 9K
 
There is less of fine gold in 375 /1000th, 38% against 75% for gold 750 /1000th. The weight of same jewel is lighter with 9 carat in 18 carat, gold being the heavy metal in the alloy. The price depends on the amount of gold, gold 375 /1000th is the cheapest to the gram. The alloys used are precious metals (silver), components that are part of the duration. The wear resistance and breakage is identical to the gold 750 /1000th. By cons it is more susceptible to corrosion, it is necessary to avoid putting in touch it with oxidant products, it could be altered more quickly than gold 750 / 1000th. And it is advisable, after a few seasons to visit your jeweler to that restores radiance and shine to your gold jewelry 9 carats.
 
All knowing on the white gold
 
Forbidden in France and in Europe, the nickel (which entered formerly in its composition) is absolutely forbidden, because source of important allergies. The white gold marketed today is some grey gold covered with a fine layer of Rhodium. Unfortunately this layer disappears in time, giving a grey-yellow color to the gold, to mitigate this wear it is possible to make a new bath of rhodium to a jeweler.

THE PLATINUM

 
PLATINUM PT
 
The platinum is one of the densest and heaviest metals. This precious metal is highly resistant to oxidation, possessing a silvery white color that does not tarnish. The rarity of platinum (30 times rarer than gold) in fact it a treasure coveted by connoisseurs. Pure and hypoallergenic, ideal for sensitive skin.

THE SILVER

 
SOLID SILVER
 
The pure silver is majority but its silver exact content is not specified. To know the quantity of money used in the alloy, it is necessary to refer to the type of awl.
 
SILVER 925
 
By definition, pure silver must contain 99 to 100% silver. But its use in that form is impossible in jewelry, pure, it is too soft. So we add other metals including copper (the most often used). The silver 925 is an alloy containing 92.5% fine silver and some copper. This is the silver that the most commonly used for making jewelry and objects.
 
RHODIUM SILVER
 
The term "rhodium" means a treatment to slow the oxidation of the metal, protect it and give it a brilliant shine. Rhodium is a rare metal that is much more expensive than gold. It is stainless, very hard, a very bright white and completely hypoallergenic. Also used for white gold, it gives exceptional durability and protects from wear. A veneer of rhodium has a certain cost, the rhodié silver becomes of this fact a high-end material.

TO NO BE FOOLED

Many very unscrupulous merchants (web and abroad included) make spend the silver of poor quality for the silver 925. False awls, false guarantees, intentional omission ... The composition of the alloys is almost never specified and the silver content is generally zero, your jewel will not hold the wear and not counting the risks of allergies! To help you a bit in all that silver traffic we grouped a list of some naming of which it is necessary to be wary.
 
SILVER OF BALI His silver content is generally lower than 925/1000
TIBETAN SILVER Metal silvered with a low or no silver content.
GERMAN SILVER Alloy copper or nickel and zinc containing little or no silver.
NEW SILVER Alloy copper or nickel and zinc containing little or no silver.
 

THE STEEL,TITANIUM AND TUNGSTEN

 
STEEL
 
The steel is smooth, long-lasting, stainless, corrosion-resistant. Iron-based alloy added with a small percentage of carbon, and other elements to make it stainless. This metal is very used in men's jewelry.
 
TITANIUM
 
Lighter than the steel, but so solid, it became very popular, in particular in wedding rings and men's jewelry, replacing advantageously the platinum or the white gold and at a lower cost. Totally hypoallergenic it enters the manufacturing of numerous piercings. The titanium does not tarnish and resists very well the wear. Its surface can be polished for a high shine or brushed for improved scratch resistance. According to its treatment its color can vary of pink, purple, green, blue, turquoise blue, black and even golden.
 
TUNGSTEN
 
The tungsten is a very hard metal (the most hard known on the planet), used generally in the manufacturing of tools or in the metallurgy industry but little in jewelry. Its color varies of the steel grey to the white tin. It is 4 times as hard as the titanium, resists admirably at the corrosion and the shocks. The only negative point, because of its hardness and of its manufacturing with complex laser machines, it is impossible to enlarge or to shrink the size.

PLATED METALS

 
GOLD PLATED
 
The technique of the gold-plated consists in depositing a fine layer of fine gold usually on some copper but also bronze, or brass. The minimum of regulatory gold layer is 3 microns.
 
GOLD PLATED RODHIÉ
 
The term " rhodié " means a treatment to slow down the blackening of the metal, protect it and give it a sensational shine. The rodhié gold-plated is of better quality, more shockproof and in the wear than the gold plated.
 
VERMEIL
 
The vermeil is not an alloy but silver covered with gold (750/1000 for the veneer and of 800/1000 for the silver). The golden layer must not be lower than 5 microns. It is considered as a precious metal.
 
SILVER PLATED
 
 
Metal silvered without any silver content or at best covered with a thin layer of silver.
 

THE LATEST CREATIONS IN 925 SILVER MADE BY LLULE

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