I use a high end thermal refracting gemstone tester to help determine what a gemstone might be. It doesn't guarantee 100% accuracy because some stones refract heat similar, but it narrows down the possibilities. I also try taking accurate pictures to help buyers determine what they believe a stone to be. A tester easily shows differences between a gemstone and colored glass.Please refer to the picture for confirmation of coin condition. Pictures are of the actual coin that you will receive. Thank you and I look forward to doing business with you. Listing and template services provided by inkFrog. The item "Arne Johansen Modernist Box Necklace 925 Silver Denmark Modernist 29in" is in sale since Monday, October 8, 2018. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Vintage Ethnic/Regional/Tribal\Scandinavian". The seller is "tiffstreasurechest" and is located in Apollo, Pennsylvania. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Iceland, Luxembourg, Macao, Viet nam, Uruguay.