In the review of the oriental hordes, Armida's car is thus described,
Her car, that glorious as Aurora's roll'd,
With rubies, pearls, and hyacinths glisten'd clear.
Among those who passed the Egyptian prince, were:
The Islanders with fleecy curls,
Whose homes are compassed by th' Arabian waves;
By whom those shells which breed the Persian pearls
Are dived and fish'd for, in their green sea caves.
The name of the gem is used in rare fashion in picturing the enchanted wood through which Rinaldo wanders:
Impearl'd with manna was each fresh leaf nigh.