‘Tis the season for utter indulgence, and whatever you’re eating, drinking or celebrating, you deserve to do so decked in diamonds. The holidays are a feast for the senses: we’re hoping for the sound of sleigh bells, the taste of mince pies and the sight of a Jessica McCormack jewellery box wrapped up with a sumptuous silk ribbon. Because it’s scientifically proven that the very best gifts come in the smallest boxes.