Moonstone. A nearly pellucid variety of feldspar, showing pearly or opaline reflections from within. The best specimens come from Ceylon. Their value is not much more than the expense of cutting.

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“God hath caused many wants and weaknesses in us that we may be useful to one another; and has purposely given a diversity of gifts and graces, that we may be helpful to each other.”
–The Works of George Swinnock