Red Diamond

… Commodity Market [Katsuo Kanzaki]
[Major commodity exchanges]
Tokyo Grain Exchange opened in October 1952. Soon after its opening, it attracted attention due to a buying spree involving azuki beans, which earned the nickname "red diamond" and became a symbol of commodity speculation for a time. In addition to azuki beans, other products listed on the exchange included imported soybeans, corn, coffee, and raw sugar.

*Some of the terminology that refers to "red diamonds" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…商品市場【神崎 克郎】
【主要商品取引所】
東京穀物商品取引所1952年10月開所。開所早々，小豆（しようず∥あずき）をめぐる買占め事件などで話題を呼び，小豆は〈赤いダイヤ〉の異名をとるなど，一時商品投機の象徴商品となった。上場品目は小豆のほか，輸入大豆，トウモロコシ，コーヒー，粗糖。…

※「赤いダイヤ」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報