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Ch. 2: Diamonds

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DIAMONDS AND PEARLS.               7
the rules ; which is acknowledged, and will remain so, as long as the humour prevails of supplying the place of diamonds of that weight, by meanly setting small stones in a cluster in their room, for the sake of a showy and flashy appearance, at a less price than stones of these sizes would admit of; by which means these sizes are less used than formerly, and become cheaper (the produc­tion of nature being always the same), and from hence they are depreciated in their va­lue ; so that the present prices of these sizes must also be reckoned the occasional, and not the just price.
The rules are, nevertheless, just, uniform, and consonant to nature ; and therefore are here proper to be offered, in order to assist in coming at the true knowledge of the value of diamonds of a higher worth, than such as are liable to be affected in their price by the alteration of fashions in jewel­ling.
The principle or rule is, that the pro­portional increase, or value of diamonds, is, as the square of their weight, whether rough or manufactured. For the explanation
Ch. 2: Diamonds Page of 160 Ch. 2: Diamonds
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