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Gold Silver Platinum Acid Test Kit - 9k 10k 14k 18k 22k Slate Stone Jewelry Tester JSP High-quality testing stone can be washed and used again 1000s of times, with rubber backing for easy testing.The inventions Emporium 
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Diamond Selector II Gold Testing Kits Gem Pen Gemstone Jewelry Tester Tool,Portable Electronic Diamond Tester Pen Jewelr LED light and audio result indication.The red light will be showed and the audio indicator will ring if the stone is reaSluffs 
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Canglan Technology Precious Metal Purity Gold Karat Tester Digital Electronic Gold Densimeter Accurate testing: The gold karat tester provides accurate readings for the purity of gold and other precious metals, helAutools 
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