|R. Allen Shoaf|
| The Consortium for the Teaching of the Middle Ages (TEAMS), 1998
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"I list here several accounts, beginning with Pliny, whose remarks are repeated throughout the medieval and early modern period. I proceed to Albert the Great, who closely follows Pliny. I then include Marbod of Rennes's De Lapidibus, probably the most important lapidary of the Middle Ages. I then proceed to Trevisa's translation of Bartholomaeus Anglicus's De Proprietatibus Rerum and to The Peterborough Lapidary as examples of Middle English texts. And I also include McCulloch's commentary on the pearl since it is a useful brief overview. " Shoaf
Appendix 1 of an edition of Thomas Usk, The Testament of Love.