{"type":"rich","version":"1.0","provider_name":"Transistor","provider_url":"https://transistor.fm","author_name":"Precious Metals Daily — by Absolute Bullion","title":"Ultrasound Testing for Gold Authenticity: How Sound Waves Detect Fake Gold","html":"<iframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless src=\"https://share.transistor.fm/e/6898cbe9\"></iframe>","width":"100%","height":180,"duration":212,"description":"Gold has been counterfeited for thousands of years, and modern fakes have become sophisticated enough to fool the naked eye and even some basic tests. Tungsten, for example, has almost the same density as gold, making weight-based checks unreliable on the","thumbnail_url":"https://img.transistorcdn.com/YnVvcpQ8Rnb-PsVUBrTc8h9OwOeBeaXiv8wzTqZ4icQ/rs:fill:0:0:1/w:400/h:400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9lNzk4/NGU1MjMwOTI1ODUy/MTg5MTU1ZWMzODBh/ZTQwYy5wbmc.webp","thumbnail_width":300,"thumbnail_height":300}