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vendredi 31 octobre 2014

Info Post
By Roseann Hudson


The color of metals like brass, bronze and copper changes over time due to a process called oxidation. This process occurs naturally when these items are exposed to air. The patinas that develop are appreciated by many individuals. This has resulted in an attempt to find different ways to accelerate the process. Today, many designers are able to produce stunning patina jewelry and make it available at online outlets.

The delightful aspect of the oxidation process is that the colors produced vary greatly depending on which metal, technique or chemical is used. This creates one-of-a-kind items in many different colors, from a light turquoise to a deep umber. Even a verdigris finish like that on an old statues offers inspiration for items of jewelry such as a bronze verdigris coin on a chain.

Reds, greens, browns, purples and blues can all be created by using various chemicals and techniques. For example, a chemical called Liver of Sulfur is used to turn silver to gray or black. A household chemical like ammonia can be used to create the most brilliant blues on copper. Vinegar and salt can be used to produce a verdigris effect that is like the patina on statues that have been standing outdoors for years.

The different methods used may involve painting or spraying on chemical solutions. Metals may also be heated or immersed in a solution. Objects are even buried in mediums like cotton wool, coffee, sand and sawdust which are saturated with a specific solution.

Experimentation is often required to learn how to achieve a particular effect. The result is one-of-a-kind items with great character as even the designer does not always know what effect is going to be obtained. Ready-made chemical solutions are available too that offer effective, tried and tested results.

Designers are using many different objects and giving them all sorts of patinas that turn them into something special. From delicate teal colored butterfly earrings to an olive green leaf layered necklace, many items are suited to both formal and informal wear. The chains used in the necklaces and bracelets are also treated as are the ear wires on earrings to integrate with the look of the objects hanging from them.

The designers have to make sure that these pieces are well finished and they are often polished by hand. Sealing is very important as the colors are unstable. If they are left unsealed, they continue to oxidize over time and the color changes. Sealing stops any further oxidation and the color remains the same.

Items of jewelry have a different dimension to them when patinas are added. The handiwork of nature is captured and recreated. Shopping online offers an opportunity to compare items and prices before making a choice. Choosing a reputable supplier ensures reliable service and an opportunity to get the best value for money.




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