The Koh-i-Noor. 105-carats, oval-shaped, and arguably, the world’s most famous diamond. Today, it’s set among 2,800 other stones in the Crown Jewels, but it hasn’t always been there.

Former Glasgow institution Koh-I-Noor is finally to disappear from the city — almost six years after it closed. An application for planning permission has been made to divide the former ...