Judokas Navjot Chana and Shushila Likmabam had to be contend with a silver medal each after they failed to clear the final hurdle in the men's 60kg and women's 48kg events, respectively. There was a bronze for for another judoka, Kalpana Thoudam.
In weightlifting, there was a silver medal for S Mirabai Chanu, while Ganaesh Mali bagged a bronze.
It was a display of overwhelming domination in 48kg women's weightlifting by the Indians as apart from Sanjita's gold, S Mirabai Chanu bagged the silver medal to make it a one-two for last edition's hosts.
In the men's 56kg contest, the 25-year-old Dey lifted a total of 248kg (109+139) after trailing at the halfway snatch stage, but came back strongly in clean and jerk to win the gold and cap a remarkable day for the Indians at the Clyde Auditorium.
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21-year-old Mali was leading after snatch but slipped behind in clean and jerk to settle for bronze with a total lift of 244kg (111+133). Malaysia's Mohd Pisol Zulheimi was at fourth after snatch but recovered in fine fashion to bag the silver with a total lift of 245kg (108+137).
Meanwhile, Australia's female swimmers set a new 4x100m freestyle relay world record of 3min 30:98sec as they retained their Commonwealth Games title in style.
The contest was all but over at the halfway snatch stage with 20-year-old Sanjita and 19-year-old Mirabai lifting 77kg and 75kg.