Prime Minister Justin Trudeau was showered with gifts — including fine wine, artwork and a designer silk tie — when he hosted the G7 summit in Quebec last month.

Amid the high tensions over trade and tariffs that dominated the talks, Trudeau and wife Sophie Gré​goire-Trudeau received 15 tokens of diplomatic appreciation for welcoming the world leaders in Charlevoix.

The list of the gifts exchanged is being made public just as Ethics and Conflict of Interest Commissioner Mario Dion is signalling that he's going to take a harder line than his predecessor did on what federal office-holders can — and can't — keep.

Following the long-standing tradition of diplomatic gift exchanges, Trudeau reciprocated, offering the leaders, their spouses and senior officials gifts of sculpture, stained glass artwork and boxes made of Labradorite and forged metals crafted by local artists.

Artist Martin Brisson creates sculptures of beluga whales.

"It was a deeply moving experience to know what I was sculpting would find itself in the hands of the world leaders," he said in an email.

Quebec artist Martin Brisson crafted sculptures for the G7 leaders that were presented as gifts from Prime Minister Justin Trudeau. (Sylvain Foster)

The gifts declared to date, which recently were posted on the federal ethics commissioner's website and first reported by La Presse, include:

Three bottles of Ökonomierat Rebholz Ganz Horn Im Sonnenschein 2015 wine from German Chancellor Angela Merkel.

A Hermès scarf given to Sophie by Brigitte Macron, the wife of French President Emmanuel Macron, during a pre-summit visit to Ottawa.

A photo of G7 leaders in Williamsburg, Virginia taken on May 29, 1983 in a leather folder from U.S. President Donald Trump. (Leaders present at that meeting included then-prime minister Pierre Trudeau, U.S. president Ronald Reagan and U.K. prime minister Margaret Thatcher.)

A Kumano Fude makeup brush set, including a silk brush holder, given to Gré​goire Trudeau by Akie Abe, spouse of Japanese Prime Minister Shinzo Abe.

A Delta Capri ballpoint pen set from Italy's Prime Minister Giuseppe Conte.

A framed engraving of Monarda fistulosa by botanical artist John Miller, given to Gregoire Trudeau by Philip May, husband of U.K. Prime Minister Theresa May.

A S.T. Dupont black lacquer roller pen from Jean-Claude Juncker, president of the European Union Commission.

A Sèvres porcelain plate from Macron.

A silk Hermès tie from Donald Tusk, president of the European Council.

Nathan-Baume leather makeup bags given to Sophie by Tusk and his wife Malgorzata Tusk.

A handmade Vietnamese lacquer jewellery box given to Sophie by Tran Nguyet Thu, spouse of Nguyên Xuân Phúc, prime minister of Vietnam.

A framed silver artwork of a flower from Nguyên Xuân Phúc.

A model of a traditional Bangladeshi boat presented in an acrylic box by Sheikh Hasina, prime minister of Bangladesh.

Three boxes containing an assortment of coffee, nuts and teas from Uhuru Kenyatta, president of the Republic of Kenya.

According to the Conflict of Interest Act, public officers must declare all gifts worth more than $200. If the value exceeds $1,000, the gift must be forfeited to the Crown unless it is cleared by the ethics commissioner.

Ethics and Conflict of Interest Commissioner Mario Dion, who took the post in December 2017, said his predecessor Mary Dawson allowed prime ministers and other office-holders to, on some occasions, retain expensive gifts and reimburse the value in excess of $1,000.

"I would not be inclined to do the same thing," he told CBC News. "I am not ruling out the possibility that one day, for instance, if there was a sentimental value attached to the gift or something of this nature, but that would not be my normal course of action.

"There is a lot of discretion given to the commissioner, so what Mary Dawson has done sometimes is different than what I will do, depending on my reading of the act, and the spirit of the act as well."

Trudeau kept a bike from China

Trudeau has kept items worth more than $1,000 twice since taking office in 2015.

In 2016, he kept a LETV smart bicycle given by Li Keqiang, premier of the State Council of China, during the G20 summit. Last year he kept an unframed, limited-edition etching by Inuit artist Annie Pootoogook. The amount that was reimbursed is not public.

G7 and European Union leaders pose for a photograph during the G7 leaders summit in La Malbaie, Que. last month. Prime Minister Justin Trudeau received a number of gifts for hosting the gathering. (Justin Tang/Canadian Press)

Democracy Watch co-founder Duff Conacher said his interpretation of the rules is that a prime minister should not be permitted to keep expensive gifts simply by paying the excess value. Determinations by the commissioner's office in the past have essentially "gutted" the rules, he said.

"I don't want there even to be a perception that they've made a decision because they've received a valuable gift from a foreign official, and I think a gift of that value creates that perception," he said.

"It says 'forfeited' for a reason. It doesn't say 'keep it for a discount'."

Forfeited gifts of 'national interest'

Those gifts that are forfeited are turned over to the National Capital Commission, which manages the inventory of items. According to its guidelines, they are treated as "items of national interest" for their archival and commemorative value, and can be displayed at federal offices, galleries or museums. Gifts that are forfeited are listed on the registry.

Items with short shelf-lives, or personal items such as scarves, purses, watches or pens, can be put up for government auction. In some cases, items are donated or destroyed.

Diplomatic gift-giving can sometimes lead to awkward moments.

During the G7 summit, Trudeau gave Trump a framed photograph of the hotel the president's grandfather once operated in Bennett, B.C.

The gift was praised as a "great moment" between the two leaders by Trump's spokeswoman Sarah Sanders, who tweeted a picture of the event. But it quickly led to embarrassment when social media buzzed that the hotel was also operated as a brothel.

Great moment between <a href="https://twitter.com/JustinTrudeau?ref_src=twsrc%5Etfw">@JustinTrudeau</a> and <a href="https://twitter.com/POTUS?ref_src=twsrc%5Etfw">@POTUS</a> when he gave him picture of the President’s grandfather’s hotel in Canada. <a href="https://twitter.com/hashtag/G72018?src=hash&ref_src=twsrc%5Etfw">#G72018</a> <a href="https://t.co/mtl5c7QPB3">pic.twitter.com/mtl5c7QPB3</a> —@PressSec

Penny Collenette, a law professor at University of Ottawa and a former Liberal PMO adviser, said offering charitable donations could be a better alternative to the usual gift exchange at these events. She said former prime minister Jean Chrétien donated Inuit artwork as a way of promoting Canadian culture.

"It helped to put Inuit art on the world stage," she said. "In that way, if a prime minister is picking something that represents our culture or something we want to have profiled, then it's probably worth it.

"If it's just some kind of an exchange of items, then it's kind of a waste of time."