Since the Hellenistic Greeks carved the first cameo (in the 5th century BC, to be exact), they’ve divided aesthetic opinion. Are they god awful or charming? Well, there have been plenty of glyptic pieces since the Neoclassical era that are, for want of a better word, a tad tacky. But medieval cameos were intensely religious and sacred, venerated as devotional objects. And if any of us stumbled upon a Roman cameo, used to show political and religious allegiance, it’s unlikely we would turn our no