大陸でも流行ピアスやペンダントなど縄文人独特とみられたアクセサリーセットがロシアや中国でも流行していたことが分かり、 縄文人の東アジア交易の実例を示すものとして注目されそうだ。長野県埋蔵文化財センターの川崎保・ 調査研究員の現地調査で２７日、分かった。川崎研究員は来年４月、ロシアのウラジオストクでの極東若手歴史学者 地域科学会議で正式に発表する。ロシアなどでも見つかったのは、平たいドーナツ形の「ケツ状耳飾り」と、首飾り の「管玉」「箆状垂れ飾り」のアクセサリー３点セット。日本では福井県金津町の桑野遺跡など縄文時代早期末 （約6300年前）に出現し、全国に流行するようになったとみられている。
芹沢長介・東北大学名誉教授は「日本と周辺国の耳飾りなどが年代によりどう変遷したかをもう少し検証しないと 「３点セットが大陸から渡ってきた」とは断定できないのではないか」と指摘している。
平成11年11月28日（共同通信配信）
NAGANO - A researcher here said he has found that accessories previously believed to be unique to the Jomon Period were popular on the Eurasian continent.
Tamotsu Kawasaki, of the Nagano prefectural center for buried cultural properties, discovered in field surveys that earrings and pendants characteristic of the Jomon Period (circa 10,000 to 300 B. C.) have also been unearthed in Russia and China.
Kawasaki said he will formally announce the finding at a symposium for young historians of the Far East that is scheduled in Vladivostok, Russia, in April.
The discovery is an indication that people of the Jomon Period were involved in trade with East Asia.
The accessories found in Eurasia similar to three-item sets composing two types of necklace, one with beads and the other with leaf-shaped pendants and flat donut-shaped earrings, Kawasaki said.
Similar accessories are believed to have appeared in Fukui Prefecture some 6,400 years ago during the early Jomon Period (5,000 B. C. -3500 B. C.) and later became popular throughout the country, according to excavations in the central prefecture.
Kawasaki said he found that the same types of accessory have been unearthed in China’s Liaoning province, dating back some 7,000 years, and Heilongjiang province, from an undetermined period, during his research in the country in December 1996.
His trip to Russia in June this year led him to similar accessories, believed to have been used about 6,500 years ago, that had been unearthed at a coastal cave, Kawasaki said.
Chosuke Serizawa, professor emeritus of archaeology at Tohoku University, said. “There needs to be more careful study on how the earrings and other accessories changed over time in Japan and its neighboring countries before we can conclude that the ‘three-item set’ came from the continent.”