under all circumstances, whatever be their weight and magnitude; and,
likewise, for manufacturing diamonds to the greatest perfection. And
apprehending that I have fully succeeded—for the promotion of the
commerce, and for the benefit of the public, I have exhibited, in this
treatise, means by which the inquisitive may attain to a right
knowledge in these matters; and more especially concerning those from
one carat weight, to those of one hundred carats.
plates of the sizes of diamonds, and the tables of the prices of both,
are extended no farther than to diamonds and pearls of that weight.
They might be carried on ad infinitum; and the rule of valuing
will hold good, though they should weigh as much as Governor Pitt's
diamond, purchased by the Regent Duke of Orleans