Leo the Deacon
Sviatoslav's appearance has been described very clearly by Leo the Deacon, who himself attended the meeting of Sviatoslav with John I Tzimiskes. Following Deacon's memories, Sviatoslav was a bright-eyed man of average height but of stalwart build, much more sturdy than Tzimiskes. He had a bald head and a wispy beard and wore a bushy mustache and a sidelock as a sign of his nobility. He preferred to dress in white, and it was noted that his garments were much cleaner than those of his men, although he had a lot in common with his warriors. He wore a single large gold earring bearing a carbuncle and two pearls.