Blue glass is noted specifically as a paternoster material in two English documents separated by over 200 years. In 1381, the inventory of a London goldsmith’s shop noted 14 paternosters of blue glass with silver-gilt gaud beads (Lightbown, Medieval European Jewellery). The appraisers who completed an inventory of the Tower of London in 1600 for Queen Elizabeth I noted the presences of seven sets of blue glass prayer beads among the hundreds they found there (Calendar of the Manuscripts of the Most Honorable Honorable, the Marquess of Salisbury).
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