Exclusive: Prime minister also presented Melania Trump with a $3,000 Paspaley pearl pendant

The Australian prime minister, Anthony Albanese, gave Donald Trump a gift of a model nuclear submarine with golden plates and finishes, internal documents reveal, during his visit to the White House last year which sealed the president’s support for the Aukus pact.

The prime minister also presented the US first lady, Melania Trump, with a A$3,000 Paspaley pearl pendant.

The information, obtained by Guardian Australia from the Department of Prime Minister and Cabinet after a four-month freedom of information process, revealed more about the delicate diplomatic planning and charm offensive that went into Albanese’s long-awaited first face-to-face meeting with Trump.

“Gift form” documents from the department reveal Albanese came to the White House bearing a two-foot-long model Virginia class submarine, mounted on a base with gold plates, and a pearl necklace from one of Australia’s most famous jewellers.