【天然or合成orガラス】プロが見抜く！水晶の鑑別【一般社団法人宝石貴金属協会】

Gemstone identification experts explain how to distinguish between crystal and glass, and how to tell natural from synthetic stones. Demonstrations of actual professional identification methods using polarizing filters and FTIR. We get to the heart of a stone's true nature—beyond what meets the eye. Please subscribe to the channel and give it a thumbs up. Society of Gem & Precious Metal HP：http://www.houkikyo.sakura.ne.jp/ Previous Video:We spoke with Mr. Kazuto Koizumi, a gemologist at the Japan Gem & Precious Metals Association    • 【日本唯一】宝石を見極める鑑別とは【一般社団法人宝石貴金属協会】   -･— ･-･-･ -･— ･-･-･ —･-･ ･･ - —･ ･･ We’re an online wholsale shop specialized in gemstone beads, loose stones and jewelry findings. Global Web Store:https://store.kenkengems.com/ 株式会社midi - corporate website:https://www.midi-japan.com/ 0:00 Opening 0:16 Crystal Identification 0:59 Structural Differences Between Crystal and Glass 1:28 Identification Using Polarizing Filters 4:07 Identifying Natural vs. Synthetic Crystal 5:56 Using an Infrared Spectrophotometer (FTIR) 7:49 Surprising Findings from Past Identification Requests 9:00 Closing #NaturalStone #GemstoneAppraisal #Gemologist #Appraisal #Certificate #Crystal #NaturalCrystal #ArtificialCrystal #Artisan #Craft #Art #Gemstone #Handmade #Accessories #Craftsmanship