A study of Prestige goods in Middle Jomon priod

绳纹中期是大量玉器（大玉珠）出土的时期。在此期间，在Itoigawa地区以外广泛报道了数量较少的玉珠和玉坯。大型玉珠出土遗址不仅在中部地区分布密集，而且在关东和东北地区也有分布。我可以指出，玉器遗址密集分布的地区与中绳文文化的中心地区重叠。这些遗址多为大型聚落，这种大型玉珠往往与墓葬有关，尤其是聚落墓地群的中心。我认为这是大汉（村长）佩戴大玉珠的证据。玉器的流通制度，是以绳纹时期的贸易商品（黑曜石、贝类、盐琥珀等）交换制度为基础的。至于玉器分布如此广泛的原因，答案是在绳纹中期，大玉器被视为一种贵重物品。

The Middle Jomon period is the time from which a large number of jade artifacts (Large jade beads) have been reported. In this time smaller number of jade beads and preforms have been widely reported outside the Itoigawa area. The distribution of large jade beads excavated sites is dense not only in Chubu area, but also Kanto and Tohoku region. I can points out that the area where sites with jadeare densely distributed overlap with the area where the center of Middle Jomon culture.Many of these sites are large settlements , and this kind of large jade beads are often associated with burials, especially center of cemetery group in settlment. I think that is proof of a large jade beads was wear by Big Man(village head).Jade distribution system , which was based on the trade goods(obsidian, shellfish, salt amber, etc ) exchange system in Jomon period. And why jade distribution was so wide spread, the answer is the large jade was regarded as a Prestige good in Middle Jomon period.