[59b] Of all the kinds of water which we have termed “fusible,” the densest is produced from the finest and most uniform particles: this is a kind of unique form, tinged with a glittering and yellow hue, even that most precious of possessions, “gold,” which has been strained through stones and solidified. And the off-shoot of gold, which is very hard because of its density and black in color, is called “adamant.”1 And the kind which closely resembles gold in its particles but has more forms than one, and in density is more dense than gold, and partakes of small and fine portions of earth so that it is harder, while it is also lighter
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