Their clothes, better made, seemed of finer cloth, and their hair, brought forward over the temples in curls, seemed to glisten with more delicate pomades. They had the complexion of wealth, that white complexion that is heightened by the pallor of porcelain, the sheen of satin, the luster of fine furniture, and is kept in perfect condition by a moderate diet of exquisite foods. Their necks turned freely above low cravats; their long side whiskers descended to their turned-down collars; they wiped their lips with scented handkerchiefs bearing embroidered monograms. Those who were beginning to age seemed youthful, while those who were young had a certain look of maturity. Their faces wore that placid expression which comes from the daily gratification of the passions; and beneath their polished manners one could sense the special brutality that comes from half-easy triumphs which test one’s strength and flatter one’s vanity – the handling of thoroughbred horses, the pursuit of loose women. (I.8.21)
Here, Flaubert describes wealthy men as though they are a totally different species, unlike the common folk that Emma is used to.