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Precious metals in jewelry manufacturing and their best use ? Precious tips / art5
Precious metals in jewelry manufacturing and their best use ? Precious tips / art5
Precious metals in jewelry manufacturing and their best use – Precious tips / art5
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Home Page > Shopping > Jewelry > Precious metals in jewelry manufacturing and their best use – Precious tips / art5
Precious metals in jewelry manufacturing and their best use – Precious tips / art5
Posted: Apr 01, 2009 |Comments: 0
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Precious metals in jewelry manufacturing and their best use – Precious tips / art5
By: Vasco Kirov
About the Author
Vasco Kirov is an experienced designer and master goldsmith with vast knowledge in every aspect concerning fine jewelry. He has been awarded many prestigious design awards for excellence in diamond jewelry design. Vasco’s web site Kirov Jewellery Studio contains plenty of visual information about diamond engagement rings and offers you the opportunity to have one designed and made up by Vasco himself
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Article Source: http://www.articlesbase.com/ – Precious metals in jewelry manufacturing and their best use – Precious tips / art5
There are many articles on precious metals on the web and some of them are quiet professional with a lot of details and data. I will try not to give you just another one. Here I will offer you a simple version and avoiding extensive technicality add my professional opinion on the best use of these metals in order to utilize their unique properties.
In this article we will focus on the most popular precious metals used for jewelry: gold, platinum and the fast growing in popularity palladium. Pure gold and platinum are soft metals which are extremely dense. pure gold is about two and half times heavier than iron and pure platinum is just under three times. While really bright in color pure metals are not suitable for fine jewelry because of their softness. Soft metals are easy to damage, difficult to polish, and unsuitable for detailed work. This is why they are mixed (alloyed) with other metals, in order to give them the desired properties. This is also where all this “carats” and confusing numbers come into play. In fact it is pretty simple. All pure metals in nature are white or gray in color except two, gold – bright yellow and copper- reddish pink. Now we go back to precious metals. All different colors of precious metals are achieved by mixing these colored metals with white ones.
Carat is a confusing name for purity or fineness of precious metals. It is confusing because the same word is used as a weight measurement for precious stones. That carat is equal to 0.2gr. and have nothing to do with metal fineness. To differentiate the one carat from the other, in some standards, weight carat is marked with ct and purity karat with kt or k. We can accept this rule to avoid confusion in further articles, therefore when we address metal purity we will use “karat”. Karat is used mainly to define purity of gold alloys. Different countries have different standards for gold purity and the most used globally alloys are: 9kt or 375, 10kt or 416, 14kt or 585, 18kt or 750, 21kt or 875 and 22 or 916. The alternative number which alone can be used as hallmark indicates the number of fine gold parts in the alloy out of 1000. The easy way to translate this into a manageable information is to perceive it as the percentage of fine gold used x10. For example 750 means 75% pure gold content or 18kt.
Platinum is used in almost pure form and 95% hallmarked 950 is a standard alloy. All alloys with pure platinum content of 95.0% or higher can be also marked with the full word “platinum” or “”plat.” Other used alloys are 900 (90%), 800 (80%) and 585(58.5) also called karat platinum. The amazing qualities of this amazing metal are better described in another article where I am comparing it with the white gold alternative.
Palladium 950 alloys are as white as the platinum, blending well with white diamonds and eliminating the need of rhodium plating. Palladium is a light metal with weight close to the one of sterling silver and much lighter than platinum and high carat gold alloys, thus making it the metal of choice for items like large earrings. At the time of writing, the price of 950 palladium alloys is about a third of the price of the 18k white gold offering great possibilities for large solid pieces at significantly reduced price. One disadvantage though is that quality casting of palladium requires materials and equipment, currently not viable for small workshops
The hallmarks you will usually find on your precious metal jewelry are:
1). Karat or fineness stamp (e.g. 18kt/ct or 750)
2) Manufacturer’s stamp
The karat stamp does not have much value without the manufacturers stamp because the declaration of purity is not signed. Beware; in most countries you can buy a karat stamp for few dollars.
Variety in gold colors and mechanical properties is achieved by alloying fine gold with one or more other metals. White gold for example is a gold alloy with whitening metals, usually palladium, nickel or silver or combination of them. Since the fine gold is always yellow, it is the alloy (base) metals that give the karat gold its color and properties. For example to be able to stamp an item as 18k it must content at least 75% of fine gold. The remaining 25 percent of alloy metals will determine its color and physical properties. If 8.4% of copper and 16.6% silver is used in the alloy, we will end up with the traditional rich 18k yellow gold color. If we mix the same amount of fine gold with 15 % of palladium and 10% of silver we will have good quality white gold. The constant content in 18k gold alloy is always 75% pure gold. Higher than 18k white gold alloys are not possible because the alloying metals are not in sufficient quantity to absorb the yellowness of the pure gold. 21k or 22k gold is always yellow, very yellow. The same principle applies for platinum and palladium, although these metals are used in much purer form (95% is a standard) and there is not detectible changes in color. The only changes there are in physical properties.
Now, with our newly acquired knowledge of precious metals we will probably arrive at the questions: What are the best alloys? What metal jewelry should I buy?
Different metals are good for different purposes. As a general rule (and if you can afford it) buy alloys with higher precious metal content. That applies mainly for gold, since platinum and palladium are used in almost pure form. 18kt gold or higher have distinctive gold color and real precious metal properties. My opinion is that alloys with less than 50% gold content (under 14k) should not be called gold, but gold brass or something else defining the inferior gold content. If you are looking for big bold and heavy pieces the best is to go for silver with gold accents or the very new precium (25%palladium and silver alloy developed by Handy & Hartman)which may be already on the market at the time you read this article. For your fine jewelry pieces choose 18k gold and platinum. 18k white gold can be used for heavier, thicker pieces while platinum is the best for delicate settings with a lot of detail. It does not make sense to set 000 diamond in white gold just to save $ 300-400 difference on platinum setting. Besides the aesthetical superiority, the security of platinum setting is immensely greater. When we come to earrings, especially large ones, choosing lighter alloys is essential. Palladium is the first choice followed by 14k white. For yellow, stick to 18k. You can never get the right color in lower karats. Then, your goldsmith’s ability to work light will come handy. Try to find the right craftsman. It is really making all the difference. The weight of the stud settings is rather small even in the case of large diamonds, thus making the platinum the obvious choice for white metal. The difference in price will be insignificant but the difference in strength and safety and quality – vast. Another advantage of the platinum studs – they could be made very delicate and retain their strength.
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Vasco Kirov -
About the Author:
Vasco Kirov is an experienced designer and master goldsmith with vast knowledge in every aspect concerning fine jewelry. He has been awarded many prestigious design awards for excellence in diamond jewelry design. Vasco’s web site Kirov Jewellery Studio contains plenty of visual information about diamond engagement rings and offers you the opportunity to have one designed and made up by Vasco himself
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gold, karat gold, white gold, yellow gold, precious metal, jewelry metals, platinum, platinum in jewelry, pure platinum, palladium, palladium jewelry, precium
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Vasco Kirov is an experienced designer and master goldsmith with vast knowledge in every aspect concerning fine jewelry. He has been awarded many prestigious design awards for excellence in diamond jewelry design. Vasco’s web site Kirov Jewellery Studio contains plenty of visual information about diamond engagement rings and offers you the opportunity to have one designed and made up by Vasco himself
Rautomead Small Horizontal Continuous Casting Machine for Precious Metals. Casting Gold, Slver, Brazing alloys. Applications in Jewellery and Gold and Silver Coinage Industries, Silver Brazing Alloys, Specialist Alloys. contact sales@rautomead.co.uk website www.rautomead.com
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Posted in Precious Metal Casting | 
Tags: Charm, fine jewelry, master goldsmith, precious metals, Replacement, shopping | 
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Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
- GORGEOUS FOR GIFTS
- COMES IN FOIL GIFT BOX
- TRENDY FASHION STYLE
- LEAD & NICKEL COMPLIANT
- BRAND NEW
Product Description
Here is a beautiful silver metal casting puffy heart pendant necklace and earrings set. This ornate heart is accented with sparkling crystals and will add class to your style! Comes on an 18″ silver chain with a lobster claw clasp and a 2″ extension. Also comes with matching earrings that you will love! Your necklace and earrings set will come to you in a foil gift box perfect for gift giving. Box may be a different color than the one shown.
Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
Posted in Jewelry |
Tags: Casting, Charm, Earrings, fashion, Gift, GORGEOUS, heart, heart pendant necklace, Jewelry, lobster claw clasp, necklace, Pandora Charms, Pendant, Puffy, SILVER |
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Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
- GORGEOUS FOR GIFTS
- COMES IN FOIL GIFT BOX
- TRENDY FASHION STYLE
- LEAD & NICKEL COMPLIANT
- BRAND NEW
Product Description
Here is a beautiful silver metal casting puffy heart pendant necklace and earrings set. This ornate heart is accented with sparkling crystals and will add class to your style! Comes on an 18″ silver chain with a lobster claw clasp and a 2″ extension. Also comes with matching earrings that you will love! Your necklace and earrings set will come to you in a foil gift box perfect for gift giving. Box may be a different color than the one shown.
Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
Posted in Jewelry |
Tags: aluminum boxes, Casting, casting aluminum, Charm, Earrings, fashion, Gift, GORGEOUS, heart, Jewelry, lobster claw clasp, necklace, Pendant, Puffy, SILVER |
No Comments »
Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
- GORGEOUS FOR GIFTS
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- LEAD & NICKEL COMPLIANT
- BRAND NEW
Product Description
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Silver Casting Puffy Heart Charm Pendant Necklace & Earrings Set Fashion Jewelry
Posted in Jewelry |
Tags: Casting, Charm, Earrings, fashion, Gift, GORGEOUS, heart, heart pendant necklace, Jewelry, lobster claw clasp, necklace, Pendant, Puffy, SILVER, silver celebrity, Sterling Silver Celebrity |
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