Chelsea (Jadeite) Filter Gemstone for Gems， Emerald， Green stones Testing， Loupe<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>This gemological tool is helpful for identifying certain red， blue and green gemstones.</li><li>It is used to determine whether a gemstone is natural or synthetic</li><li>Can also be used for detecting Synthetic Blue Spinel and for detecting dyes in certain gemstones.</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41nD-QYUZRL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41944LIrqML.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41IL7F8WgqL.jpg" noproxy>