Arethusa by F. Marion Crawford

Carlo Zeno's interview with Rustan had been short and business-like, as has been said. It was indeed not at all likely that a man of the Venetian's temper and tastes would talk with a Bokharian slave-dealer a moment longer than necessary.

Rustan, on hearing what was wanted, declared that he had the very thing; in fact, by a wonderful coincidence, it was the very thing in the acme of perfection, a dream, a vision, fully worth four hundred ducats, and certainly not to be sold for three hundred; it had fine natural hair that had never been dyed; its teeth were twenty-eight in number, the wisdom teeth not having yet appeared, and Rustan would wager that Messer Carlo could not find a single pearl in all Constantinople to match one of those eight-and-twenty; its ankles were so finely turned that a woman could span them with her thumb and forefinger. Rustan felt safe in saying this, for his black wife's huge hand could have spanned Zoe's throat; also it had a most beautiful and slender waist, which, as Messer Carlo remarked, was certainly a point of beauty. Moreover, Rustan would deliver a signed and sealed certificate with it.