Theobromine, also known as xantheose, is the active ingredient in one of CrankyBot's favourite foods (if robots ever had to eat) - chocolate. Theobromine has the chemical formula C7H8N4O2. As well as chocolate, it is found in a number of other foods, including the leaves of the tea plant, and the kola nut.

This necklace is laser cut from one piece of 3mm acrylic and measures about 4cm wide x 3.5cm tall. The chocolate molecule pendant is attached to a 18" silver plated necklace chain. It comes in a CrankyBot gift bag.