A Guernsey heifer sold for a $16,000 breed record price for an unjoined heifer at the International Dairy Week (IDW) sale on Tuesday.

The 16-month-old heifer is the daughter of the legendary Florando SD Koala, which was named grand champion cow at IDW for four consecutive years from 2012 to 2015 and was named Global Guernsey Cow of the Year in 2014.

The heifer Kearla Latimer Koala was bought by Mansour Al Dheheri, of the United Arab Emirates, with the sale facilitated by Trevor Robbins, of Australia's Livestock Exporters, bidding through representative David Ninnes, from Semex.

Kevin and Carla Gass, Cooriemungle, Vic, offered the heifer for sale.

Mr Gass had owned Florando SD Koala in partnership with the Joyce family, and had retained some of its daughters and embryos when that partnership was dissolved a couple of years ago.

The record price was great for the breed, Mr Gass said.

"It shows people there is money to be made in Guernseys and puts them in the limelight," he said.

The top price helped push the sale average to a record $5630.

The second top-priced heifer was offered by Western Australian breeder Colin Gilbert and was also bought by an overseas buyer - this time Digby Gribble, from the United Kingdom, on behalf of the UK Guernsey Cattle and G Norris, UK, for $7800.

Mr Al Dheheri bought Mr Gilbert's other offering - an 18-month-old heifer - for $5700.