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Product Description Rechargeable Diamond Tester High Accuracy Diamond Tester Pen with UV Light,Jewelry Gem Tester Pen,Portable Diamond Checker Tool,Professional Diamond Selector for Novice and Expert,Thermal Conductivity Meter- Perfect for gemstones, jewelry,gold, silver and etc. Accuracy and portability are what we pursue all the time, we've been working on it to becoming your precision stewards. How To Test Diamond Key operation, at a glance 1. The preheating time is 1 minute. 2. When the instrument is turned on, it will automatically shut down without working for 3 minutes. 3. Easy to use? [Adjust Size]:We have to choose the diamond size before using the diamond tester.Otherwise we may get the incorrect result. [Bare Hands Operation Touch Panel]: We have to touch the panel on the back when testing. Othersize we will get a wrong result. [Incorrect Contact]: When we have incorrect contact, this diamond tester pen will have a flashing OR it will turn off. When you testing metal,skin,or something else. 4. Diamond Tester Pen Test result analysis: If lights >= 9 and have sounds, it is true diamond. If lights <9 and no sounds, it is not diamond. If lights is 7 or 8, it is true crystal. If lights is 6 or 7, it is true jade. Don't test metal?Don't wear gloves. Guide to the operation of diamond test pen Package include: 1 x Diamond Tester Pen 1x 1M USB Cabel 1x Power adapter 1 x Testing Platform 1 x User Manual Popular among professionals, hobbyists, coin enthusiasts, and business owners alike. Excellent tools. Excellent Value. Great gift idea. #productDescription { color: #333333; word-wrap: break-word; font-size: small; line-height: initial; margin: 0.5em 0px 0em 25px; } #productDescription_feature_div > h2.default { font-size: medium; margin: 0 0 0.25em; } #productDescription_feature_div > h2.books { color:#333 !important; font-size:21px !important; line-height: 1.3; padding-bottom: 4px; font-weight: normal; margin: 0px; } #productDescription_feature_div > h2.softlines { color:#333 !important; font-size:21px !important; line-height: 1.3; padding-bottom: 4px; font-weight: bold; margin: 0px; } #productDescription > p, #productDescription > div, #productDescription > table { margin: 0 0 1em 0; } #productDescription p { margin: 0em 0 1em 1em; } #productDescription h3 { font-weight: normal; color: #333333; font-size: 1.23em; clear: left; margin: 0.75em 0px 0.375em -15px; } #productDescription table { border-collapse: inherit !important; margin-bottom: 0; } #productDescription table img { max-width: inherit !important; } #productDescription table td { font-size: small; vertical-align: inherit !important; } #productDescription ul li { margin: 0 0 0 20px; } #productDescription ul li ul { list-style-type: disc !important; margin-left: 20px !important; } #productDescription ul ul li { list-style-type: disc !important; margin-left: 20px !important; } #productDescription > ul ul li { list-style-type: disc !important; } #productDescription ul li ul li { margin: 0 0 0 20px; } #productDescription .aplus p { margin: 0 0 1em 0; } #productDescription small { font-size: smaller; } #productDescription.prodDescWidth { max-width: 1000px } P.when('jQuery').execute(function($){ $("#productDescription table").each(function() { var width = $(this).attr('width'); if (width) width += 'px'; else width = 'auto'; $(this).css('width', width); var padding = $(this).attr('cellpadding'); if (padding) padding += 'px'; else padding = '0px'; $(this).css('padding', padding); }); }); #productDescription h3 { margin: 0.75em 0px 0.375em -1px; }

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