Jewellery reference books: Jewels, by Sue Heady, pub by Grange Books, 1999 (hardcover); Warman’s Jewellery Field Guide, value and identifciation, by Leigh Leshner, pub by K.P. Books, 2005 (softcover); Scottish Antiques, by Donald Wintersgill, pub by Johnson & Bacon, division of Cassell & Collier Macmillan Publishers Ltd., 1977 (hardcover); Jewellery: Makers, Motifs, History, Techniques, by Diana Scarsbrick, et al., pub by Quarto for Thames and Hudson, 1989 (hardcover); The Art of Jewelry, by Graham Hughes, pub by Peerage Books, 1972 (hardcover); The Pleasure of Jewelry and Gemstones, by Jospeh Sataloff and Alison Richards, pub by Octopus Books Ltd, 1975 (hardcover); Gems and Jewels: Uncut stones and objects d’art, Intro by Henri-Jean Schubnel, English edition, pub by Orbis Books, 1971 (hardcover). [7] £60-£80