Are you going with natural pearls, cultured or imitation? Have you thought of pearl size and colour, strand length, clasp style…? Which flaws should you look out for, and what are lustre and nacre thickness again? There are countless elements to consider before investing in new or vintage pearls. Gemologist Renée Newman explains all of them in the updated 5th edition of her pearl reference guide. With over 300 colour photos, tips on how to wear your pearls and a chapter on how to keep them in tip-top condition.