Withdrawing the pearl collar is the first of many reckless decisions Philip will make in this second half of the novel. It is important to note that Philip is technically stealing the necklace, since he does not yet legally own any of the Ashley property. This emphasizes the wrongness of Philip’s obsession with Rachel, since he is willing to break the law to prove his love to her. Additionally, the fact that Philip acts in defiance of his godfather, Nick Kendall, shows that Philip is trying to assert his manhood, which is of course powerfully linked to his desire to make himself seem sexually attractive to Rachel.