What is Turbinado Sugar, the Raw, Unrefined Sugar That Makes Cakes and Muffins Look So Fancy and Sparkly?

What is turbinado sugar and why do we love it so much? It makes cakes sparkle, and it also creates a great crackly crust.

Source: What is Turbinado Sugar, the Raw, Unrefined Sugar That Makes Cakes and Muffins Look So Fancy and Sparkly?