These look like they could be real pebbles but instead they are a chocolate centre with a crisp candy shell.
 
Ingredients:
Sugar, Cocoa Butter, Cocoa Mass, Milk Solids, Lactose, Emulsifier (Soya Lechithin), Gelatine (Beef), Natural Flavour (Vanilla Extract), Colours (102, 110, 129, 133, 171), Glazing Agent (903)
May contain traces of Peanuts, Tree Nuts, Seed, Soy and Wheat