33 The symbol dictionary I have primarily used for this essay has only recently been translated from French;  I recommend it for the breadth of its references, especially its inclusion of African and Asian ones, which rarely find their way into such dictionaries: Jean Chevalier and Alain Gheerbrant, A Dictionary of Symbols (Cambridge: Blackwell, 1994). The following amplifications are drawn from the entries for “green” and “emerald,” found on pages 451-456 and 351-353, respectively.