the glowing brilliant red of the ruby, the soft clear green of the
emerald, and the delicate strata of the onyx, alike only display
themselves in their true character after the lapidary has exhausted
his skill in cutting them into facets and polishing them; and on the
perfection of this operation depends in a great measure the beauty of
the gem. It may be here observed, that many pure and perfect jewels
have been irretrievably spoilt by unskilful hands.