The Bajan babe is set to premiere the track on US radio later today (Wednesday 26th September), with the song being available to download in America shortly after.
In the first verse for Diamonds, lyrics include: "Find light in the beautiful sea/ I choose to be happy/ You and I, you and I/ We're like diamonds in the sky."
The chorus centres around the hook: "So shine bright, tonight you and I/ We're like beautiful diamonds in the sky/ Eye to eye, so alive/ We're like beautiful diamonds in the sky."
Diamonds will be the first cut from RiRi's seventh studio album - which the We Found Love hitmaker teased earlier this week.
She tweeted a link to http://Rihanna7.com, with the website showing an ‘R’ made up of handwritten words and phrases that appear to hold significance for the singer.
Included are phrases such as 'Heart Break' and 'What's love without a tragedy?', suggesting the LP may touch upon experiences from her personal life.
Earlier this week, Rihanna hit the headlines for publicly tweeting a good luck message to ex-boyfriend Chris Brown, as he prepared to go to a probation hearing as part of his sentence for his infamous assault on RiRi back in 2009.
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