Gemstone networks in the Roman Empire, according to Pliny the Elder's vision

The data in general are gemstones consumed in Roman markets and featured in book 37 of Pliny's Natural History. The data are the result of cleaning processes of the data. These...本数据集所收录的数据总体上均为罗马市场中流通使用的宝石，且相关内容收录于老普林尼《博物志》（Natural History）第37卷。本数据集系对原始数据开展数据清洗流程处理后所得的成果。……