奥古斯都宝石浮雕

The Gemma Augustea (Latin, Gem of Augustus) is an ancient Roman low-relief cameo engraved gem cut from a double-layered Arabian onyx stone. It is commonly agreed that the gem cutter who created it was either Dioscurides or one of his disciples, in the second or third decade of the 1st century AD.

摘自英文维基百科「Gemma Augustea」（CC BY-SA 4.0），暂时没有中文条目。