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<p>[QUOTE=&quot;shamster, post: 9757115, member: 85821&quot;]Yeah I agree, the chance of both chains from professional sellers went wrong is kinda low(one told me she had it acid tested twice and XRF once at a jeweler, the other has been selling on ebay for ten years and has thousands of good reviews), and I got both of them acid tested only, they simply told me they thought it&#039;s plated but I didn&#039;t see how the test actually went through apart from the blackening on my link, I am suspecting the actually purity getting a bit lower than modern standard. And prawbrokers may simply unwilling to accept any gold that they are not confident with,guess they aren&#039;t 100% sure either!</p><p><br /></p><p>As for XRF, I guess on jewelry you usually won&#039;t get a really thick plating on those delicate links and joints so after polishing a bit off the result should be accurate, otherwise the ultimate way to determine the authenticity is to cut through the whole thing which is unacceptable for jewelry collector and dealer.</p><p><br /></p><p>Thank you for your advice[/QUOTE]</p><p><br /></p>

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