Platinum sterling: Difference between revisions
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| ⚫ | '''Platinum Sterling''' is a registered trademark name of |
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{{notability|date=June 2013}} |
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{{citation style|date=October 2011}} |
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| ⚫ | '''Platinum Sterling''' is a [[registered trademark]] name of [[ABI Precious Metals]], Inc. The trademark covers a range of [[alloy]]s whose primary constituents are [[platinum]] and [[silver]], primarily used in jewellery.<ref>[http://www.abipreciousmetals.com/PG.htm] {{Webarchive|url=https://web.archive.org/web/20090123042738/http://abipreciousmetals.com/PG.htm |date=2009-01-23 }} ABI Precious metals marketing information for Platinum Sterling</ref> The range of Platinum Sterling alloys was developed in 2003 by Marc Robinson, and its solder was created by Chuck Bennett. |
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| ⚫ | The platinum is used to replace at least some of the copper present in a typical [[sterling silver]] alloy |
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==Properties== |
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Tests performed by the American Assay and Gemological Office showed that the whiteness of platinum-sterling alloys exceeds that of both sterling silver and white gold, with the new 3.5 percent platinum sterling displaying six times more resistant to tarnishing than standard sterling alloy. <ref>[http://www.ganoksin.com/borisat/nenam/platinum-sterling-alloy-1.htm] "White Wedding: The Marriage of Platinum and Sterling" (Modern metallurgy brings together the two most beloved white jewelry metals in a new platinum-sterling alloy.) by Nanz Aalund, September 2006 |
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</ref> |
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| ⚫ | Platinum Sterling is a cheaper alternative to white gold.{{Citation needed|date=May 2012}} It is also allegedly hard wearing and very white and so does not require rhodium plating like white gold.<ref>[http://www.softflexcompany.com/spotlightarticle_Oct06.html] Spotlight on innovative metals.</ref><ref>{{cite news |title=Benefits of Gold |url=https://www.starlightjewellery.com.sg/blogs/gold-knowledge/brilliant-benefits-of-wearing-gold-jewelry |access-date=29 November 2023}}</ref> |
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The exact composition of Platinum Silver is not published, however three alloys are commercially available, all containing standard .925 [[sterling silver]] and 1%, 3.5% or 5% platinum. A small amount of gallium can also be added to the composition to provide ease of manufacture of the alloy. |
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The composition of Platinum Sterling is published; three alloys are commercially available, all containing standard 92.5% [[sterling silver]] and 1%, 3.5% or 5% platinum.<ref>{{Cite web |url=http://www.abipreciousmetals.com/Sterling%20with%20Platinum/Sterling.htm |title=Untitled Document |access-date=2010-11-14 |archive-url=https://web.archive.org/web/20101024153629/http://abipreciousmetals.com/Sterling%20with%20Platinum/Sterling.htm |archive-date=2010-10-24 |url-status=dead }}</ref> A small amount of [[gallium]] can also be added to the alloy to ease manufacturing. The patent application for Platinum Sterling claims: |
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| ⚫ | {{quote|A metal alloy having a composition consisting essentially of 90.5–95.5% [[silver]] by weight, about 0.5–6% [[platinum]] by weight, about 0.7–4% [[copper]] by weight, about 0.1–2% [[gallium]] by weight, about 1–3% [[tin]] by weight, about 1–2.5% [[germanium]] by weight, about 0.5–4% [[zinc]] by weight, and about 0.1–0.2% [[silicon]] by weight.|<ref>[http://www.freepatentsonline.com/7118707.html] Details of patent for Platinum Sterling</ref>}} |
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The patent application for Platinum Sterling claims: |
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The claim also states: |
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<blockquote> |
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| ⚫ | A metal alloy having a composition consisting essentially of 90.5–95.5% [[silver]] by weight, about 0.5–6% [[platinum]] by weight, about 0.7–4% [[copper]] by weight, about 0.1–2% [[gallium]] by weight, about 1–3% [[tin]] by weight, about 1–2.5% [[germanium]] by weight, about 0.5–4% [[zinc]] by weight, and about 0.1–0.2% [[silicon]] by weight. |
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<ref>[http://www.freepatentsonline.com/7118707.html] Details of patent for Platinum Sterling</ref></blockquote> |
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| ⚫ | {{quote|...the preferred embodiments of the present invention provide a metal alloy comprising about 90.5–95.5% [[silver]], about 0.5–6% [[platinum]], about 0.7–4% [[copper]], and about 0.1–2% [[gallium]]. In some embodiments, the alloy further comprises about 0.5–4% [[zinc]], about 0–0.2% [[silicon]], about 0–0.3% [[boron]] and about 0–1.5% [[indium]]. In other embodiments, the alloy further comprises about 0–3% [[tin]] and about 0–2.5% [[germanium]].}} |
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And from the same claim: |
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<blockquote> |
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| ⚫ | ...the preferred embodiments of the present invention provide a metal alloy comprising about 90.5–95.5% [[silver]], about 0.5–6% [[platinum]], about 0.7–4% [[copper]], and about 0.1–2% [[gallium]]. In some embodiments, the alloy further comprises about 0.5–4% [[zinc]], about 0–0.2% [[silicon]], about 0–0.3% [[boron]] and about 0–1.5% [[indium]]. In other embodiments, the alloy further comprises about 0–3% [[tin]] and about 0–2.5% [[germanium]]. |
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</blockquote> |
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==See also== |
==See also== |
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* Platinaire |
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* [[List of alloys]] |
* [[List of alloys]] |
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==References== |
==References== |
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{{ |
{{Reflist}} |
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{{Jewellery |
{{Jewellery}} |
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[[Category:Silver]] |
[[Category:Silver]] |
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[[Category:Platinum]] |
[[Category:Platinum]] |
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[[Category:Precious metal alloys]] |
[[Category:Precious metal alloys]] |
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[[Category:Jewellery components]] |
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Latest revision as of 10:29, 20 September 2024
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Platinum Sterling is a registered trademark name of ABI Precious Metals, Inc. The trademark covers a range of alloys whose primary constituents are platinum and silver, primarily used in jewellery.[1] The range of Platinum Sterling alloys was developed in 2003 by Marc Robinson, and its solder was created by Chuck Bennett.
Properties
[edit]The platinum is used to replace at least some of the copper present in a typical sterling silver alloy, which provides a greater light reflectivity (by refining the grain structure) and resistance to tarnish (thought to be caused by oxidation of copper) than standard sterling silver.
Platinum Sterling is a cheaper alternative to white gold.[citation needed] It is also allegedly hard wearing and very white and so does not require rhodium plating like white gold.[2][3]
Composition
[edit]The composition of Platinum Sterling is published; three alloys are commercially available, all containing standard 92.5% sterling silver and 1%, 3.5% or 5% platinum.[4] A small amount of gallium can also be added to the alloy to ease manufacturing. The patent application for Platinum Sterling claims:
A metal alloy having a composition consisting essentially of 90.5–95.5% silver by weight, about 0.5–6% platinum by weight, about 0.7–4% copper by weight, about 0.1–2% gallium by weight, about 1–3% tin by weight, about 1–2.5% germanium by weight, about 0.5–4% zinc by weight, and about 0.1–0.2% silicon by weight.
— [5]
The claim also states:
...the preferred embodiments of the present invention provide a metal alloy comprising about 90.5–95.5% silver, about 0.5–6% platinum, about 0.7–4% copper, and about 0.1–2% gallium. In some embodiments, the alloy further comprises about 0.5–4% zinc, about 0–0.2% silicon, about 0–0.3% boron and about 0–1.5% indium. In other embodiments, the alloy further comprises about 0–3% tin and about 0–2.5% germanium.
See also
[edit]- Platinaire
- List of alloys
References
[edit]- ^ [1] Archived 2009-01-23 at the Wayback Machine ABI Precious metals marketing information for Platinum Sterling
- ^ [2] Spotlight on innovative metals.
- ^ "Benefits of Gold". Retrieved 29 November 2023.
- ^ "Untitled Document". Archived from the original on 2010-10-24. Retrieved 2010-11-14.
- ^ [3] Details of patent for Platinum Sterling