http://www.jewelrymakingidea.com/blog/how-does-a-touchstone-on-jewelry-work/ Fri, 18 May 2012 01:00:11 +0000 http://wordpress.org/?v=2.7 hourly 1 http://www.jewelrymakingidea.com/blog/how-does-a-touchstone-on-jewelry-work/comment-page-1/#comment-2790 James Thu, 08 Jul 2010 23:27:07 +0000 http://www.jewelrymakingidea.com/blog/how-does-a-touchstone-on-jewelry-work/#comment-2790 In analyzing a jewelry we van use metallurgical assay. Metallurgical assay is analysis for metal and alloy. Assay methods are suitable for raw materials while others which are better suited for finished goods. Raw precious metals are assayed by an assay office. Silver is assayed by titration, gold by cupellation and platinum by inductively coupled plasma optical emission spectrometry.<a href="http://www.resumeminers.com/universities/science-degree.htm"> James</a> In analyzing a jewelry we van use metallurgical assay. Metallurgical assay is analysis for metal and alloy. Assay methods are suitable for raw materials while others which are better suited for finished goods. Raw precious metals are assayed by an assay office. Silver is assayed by titration, gold by cupellation and platinum by inductively coupled plasma optical emission spectrometry. James

]]> http://www.jewelrymakingidea.com/blog/how-does-a-touchstone-on-jewelry-work/comment-page-1/#comment-2789 Yvette Mon, 05 Jul 2010 21:08:49 +0000 http://www.jewelrymakingidea.com/blog/how-does-a-touchstone-on-jewelry-work/#comment-2789 first, i think you need to figure out the touchstone is used for which kind of jewelry? is it for diamond? sapphire? jade? you need to know different gemstones have its own features. maybe this link is helpful<a href="http://www.autostires.com/filter-cleaning-system-341"> Yvette</a> first, i think you need to figure out the touchstone is used for which kind of jewelry? is it for diamond? sapphire? jade? you need to know different gemstones have its own features.
maybe this link is helpful Yvette

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