| 09-28-21 Metal Markets | |
|---|---|
| Gold $1,733.75 | |
| Silver $22.50 | |
| Platinum $987.00 | |
| Palladium $1,944.00 | |
| Iridium $5,000.00 | |
| Ruthenium $675.00 | |
| Learn More | |
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Gold doesn’t have to glitter to be gold. In fact, many jewelry manufacturers deliberately trade high gloss for low luster in order to give their pieces a muted appearance. Since gold is, by nature, a metal that loves to shine, keeping it from doing so requires skillful mutilation with various abrasives.
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Enameling is a time-honored process that’s great for bringing elegant color to metal jewelry.
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An Expert Offers Cures for Centrifugal Rubber Mold Casting Ailments Spin Doctor An Expert Offers Cures for Centrifugal Rubber Mold Casting Ailments Centrifugal rubber mold casting (CRMC) is a common jewelry manufacturing process, particularly in the production of costume jewelry.
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In addition to all of the casting problems normally encountered with karat gold jewelry alloys, there are some problems associated with sterling silver. Before tackling these silver casting problems, let’s examine why silver is more difficult to cast than gold.
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In this installment of General Metallurgy, Paul Finelt finishes his discussion of phase diagrams and begins on practical applications for casting.
Continue reading Understanding Metals: General Metallurgy, Pt. III
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This installment of Paul Finelt’s Understanding Metals deals with understanding alloy phase diagrams. It is probably the most technical and complicated article of the series, but once the reader is over this ‘hump,’ practical application for the jeweler and manufacturer will follow…
Continue reading Understanding Metals: General Metallurgy, Pt. II
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In this article, I hope to present a very simple description of electroforming. In his book, Jewelry: Concepts and Technology (New York, NY: 1982, Doubleday), Oppi Untract defines electroforming as the “process of synthesizing a metal object by controlling the electrodeposition of metal passing through an electrolytic solution onto a metal or metalized form.” Very…
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Metallic Abrasion Make-up present on the skin or clothing is the most common cause of the blackening or smudging. Cosmetics often contain chemical compounds which are harder than the jewelry itself. Metallic abrasion occurs when these hard compounds come in contact with the jewelry metals and wear or rub off very tiny particles of metal…
Continue reading Why Jewelry Sometimes Blackens the Skin or Clothing
