The German town of Nordlingen is located inside of a crater in the southern state of Bavaria. During construction of the town, which was in the 9th Century AD, the settlers didn't realise the stone they were using was embedded with millions of tiny diamonds, in a concentration seen nowhere else in the world. A kilometre-wide meteor once stuck the land creating a 26 km wide crater, where the intense heat and pressure led to the carbon particles sediment into millions of tiny diamond particles of about 0.2 mm.

The shimmer is still visible in almost all of the period buildings and makes Nordlingen this unique marvel in the world.