NWT Premier Roland gave Kate & William 692 diamonds during Yellowknife visit last summer

'Brooch' and 'pair of cufflinks'...included a total of 692 diamonds – 302 for Kate and 390 for William.....Kate and William were given a gift each by the premier of the Northwest Territories while visiting the town of Yellowknife.
These trinkets were modestly listed by the couple's office as 'brooch' and 'pair of cufflinks'.
But both were made from platinum, studded with diamond pave and specially commissioned from world-renowned jeweller Harry Winston, a favourite of A-list stars.
[...]
According to the firm's chairman, Robert Gannicott, it took their best craftsmen 250 hours to make the royal gifts. 'These convey the wealth of respect and affection that we hold for the royal couple,' premier Floyd K. Roland said as he handed over the gems.
The items together included a total of 692 diamonds – 302 for Kate and 390 for William. However, Clarence House insisted that it was 'inappropriate to highlight whether a gift was valuable'..."

http://www.dailymail.co.uk/femail/article-2084973/Kate-Duchess-diamonds-Gift-Canada-listed-officials-brooch-revealed-designer-platinum-302-stones.html?ito=feeds-newsxml

'pair of cufflinks'
http://i.dailymail.co.uk/i/pix/2012/01/11/article-2084973-0F67D8A900000578-757_634x286.jpg

'brooch'
http://i.dailymail.co.uk/i/pix/2012/01/11/article-2084973-0F681F3D00000578-297_634x1183.jpg