‘Party Time’ 

1) Mirny night club, photographer Ilya Varlamov, https://commons.wikimedia.org/wiki/Category:Photographs_by_Ilya_Varlamov/Mirny#/media/File:Mirny_-_190226_DSC_4638.jpg
2) Screen shot, informational film Alrosa website: http://www.alrosa.ru/%D0%BF%D1%80%D0%BE%D0%B8%D0%B7%D0%B2%D0%BE%D0%B4%D1%81%D1%82%D0%B2%D0%BE/%D0%B3%D0%B5%D0%BE%D0%BB%D0%BE%D0%B3%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9-%D0%BA%D0%BE%D0%BC%D0%BF%D0%BB%D0%B5%D0%BA%D1%81/

One of the unique optical properties of diamonds is their ability to break light rays as they penetrate the diamond. Only a portion of the light hitting a diamond is reflected; the rest travels through it. As the light moves through the diamond, it is scattered and fractured, creating the sparkle that diamonds are known for. This is the refraction. Like a prism, a diamond divides light into a spectrum of colors and reflects this light as colorful flashes called 'fire'. This unique property can sometimes be found in more humble circumstances, like this cafe in Mirny, Sakha Republic, photographed one Winter's night by Ilya Varlamov.