Precious Metal Testing

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Precious metal testing checks the purity of a sample, which determines its value. This presentation explains several different tests, or assays, that Manhattan Gold and Silver performs.

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Precious Metal Testing

  1. 1. Precious Metal TestingPrecious Metal Testing Assay Types for Gold and OtherAssay Types for Gold and Other Precious MetalsPrecious Metals Manhattan Gold & Silver | 45 W 47th Street | New York, NY 10036 | 212-398-1454
  2. 2. What PM Tests are ForWhat PM Tests are For • Before accepting gold, MGS (or any precious metal refinery for that matter) must test or “assay” a sample. • The assay determines the purity of the gold, which determines its value. • Accurate precious metal assays are important for receiving a fair payout. 2013 © Manhattan Gold & Silver2013 © Manhattan Gold & Silver www.mgsrefining.com | 212-398-1454www.mgsrefining.com | 212-398-1454
  3. 3. 2013 © Manhattan Gold & Silver2013 © Manhattan Gold & Silver www.mgsrefining.com | 212-398-1454www.mgsrefining.com | 212-398-1454 The Difference Between TestsThe Difference Between Tests • Different assays can yield different results depending on the skills of the assayer and the type of assay. – At MGS, we have been testing precious metal samples for more than 25 years. • There are three different assays that we can perform: – Hand Assay (aka Stone Test) – Machine Assay (aka X-Ray Fluorescence) – Fire Assay
  4. 4. 2013 © Manhattan Gold & Silver2013 © Manhattan Gold & Silver www.mgsrefining.com | 212-398-1454www.mgsrefining.com | 212-398-1454 Hand AssayHand Assay A hand assay is the fastest way to test the purity of a gold sample. – Hand assays are fast and accurate enough to ensure fair payments for walk-in patrons. • To perform the test, the metal is scratched against a basalt stone, leaving a fine line. • This line is treated with chemicals that will only react with certain purities of gold. • By carefully observing the chemical reaction, the purity or authenticity of the sample can be determined.
  5. 5. 2013 © Manhattan Gold & Silver2013 © Manhattan Gold & Silver www.mgsrefining.com | 212-398-1454www.mgsrefining.com | 212-398-1454 Machine AssayMachine Assay • A machine assay is a quick type of test that is extremely accurate, even more so than a hand test. – Machine assays can be done onsite and are best for larger batches of precious metal. • This assay uses a machine to bombard a sample with x-rays. • The sample reflects the x-rays back as light. This energy level of the light is specific to the metal’s atomic structure. • The machine analyzes this energy level to determine the purity of the sample. – A machine assay is so thorough it can also measure the percentage of impurities at the same time.
  6. 6. 2013 © Manhattan Gold & Silver2013 © Manhattan Gold & Silver www.mgsrefining.com | 212-398-1454www.mgsrefining.com | 212-398-1454 Fire AssayFire Assay • A fire assay is the most accurate purity test, but it is also the most complex. – MGS requires at least one day to perform a fire assay at our offsite melting facility. • First, the gold is melted together with lead oxide and control substances. – This causes everything to bind together. • The resulting mixture is poured into a mold and cooled. – This causes the lead to sink to the bottom of the mold. • The lead bottom is chipped off and melted in a cupel. • The cupel absorbs all the lead, leaving only pure gold behind. – The amount of gold produced from the lead is measured against the overall sample determine its purity.
  7. 7. About MGSAbout MGS Manhattan Gold & Silver | 45 W 47th Street | New York, NY 10036 | 212-398-1454 • Manhattan Gold & Silver (MGS) is a precious metals refiner that has been based in Manhattan’s historic Diamond District since 1985. We are a B2B company that buys and recycles precious metal scraps that accumulate in other businesses. • We serve: – Jewelers – Pawnbrokers – Dentists – The industrial sector – Antique dealers – Machinists – And more! • MGS also creates charts, calculators, and other online tools for our customers to use. – Try our Precious Metals Prices app, which lets you monitor the real-time precious metals market situation from anywhere, right from your iPhone.
  8. 8. Recycle your PreciousRecycle your Precious Metals for ProfitMetals for Profit • MGS accepts gold, silver, platinum, and palladium. • Payouts are based on the London Fixing. • Up to 98% payout (among the highest in the US) – Up to 98.5% for gold brought in for hand testing. • Not in NYC? Ship us your precious metals using our Ship & Sell service. Ship & Sell offers: – Same day wired payment (once lot is received) – Discounted, insured shipping – Payout calculator Manhattan Gold & Silver | 45 W 47th Street | New York, NY 10036 | 212-398-1454
  9. 9. Connect with MGSConnect with MGS • For amazing facts, history, and news, read our gold and precious metals blog. • Join the conversation about precious metals on the MGS Facebook wall. • Follow gold, silver, and other precious metal trends on the MGS Twitter account. • Circle MGS on Google+ to hear about our latest updates, contests, and more. • If you do business with us, connect with us on the MGS LinkedIn page. • To see precious metal refinement in action, visit the MGS Youtube channel. Manhattan Gold & Silver | 45 W 47th Street | New York, NY 10036 | 212-398-1454
  10. 10. Connect with MGSConnect with MGS • For amazing facts, history, and news, read our gold and precious metals blog. • Join the conversation about precious metals on the MGS Facebook wall. • Follow gold, silver, and other precious metal trends on the MGS Twitter account. • Circle MGS on Google+ to hear about our latest updates, contests, and more. • If you do business with us, connect with us on the MGS LinkedIn page. • To see precious metal refinement in action, visit the MGS Youtube channel. Manhattan Gold & Silver | 45 W 47th Street | New York, NY 10036 | 212-398-1454

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