925 Sterling

Sterling silver wedding band style ring: 938,700 ppm Silver & 52,000 ppm Copper (+ Tin, Vanadium & Barium.)

Sterling silver wedding band style ring: 938,700 ppm Silver & 52,000 ppm Copper (+ Tin, Vanadium & Barium.)

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XRF test results for the ring pictured. This is a really good example of typical total metals content for 925-marked modern Sterling Silver. The two main ingredients in modern Sterling are Silver [usually at least 925,000 ppm — hence the “925” mark, which translates to 92.5% of the total make up of metals for the item],…

Moogco Sterling Silver Protective Nursing Cups: very pure Silver (938,000 ppm Silver!) Did you know that historically these were made of LEAD?!

Moogco Sterling Silver Protective Nursing Cups: very pure Silver (938,000 ppm Silver!) Did you know that historically these were made of LEAD?!

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For those new to this website: Tamara Rubin is a multiple-Federal-award-winning independent advocate for childhood Lead-poisoning prevention and consumer goods safety, and a documentary filmmaker. She is also a mother of Lead-poisoned children (two of her sons were acutely Lead-poisoned in 2005). Since 2009, Tamara has been using XRF technology (a scientific method used by…