Its 52 New Zealand stores grew ebit 10 percent to $15.3 million as revenue rose 6.7 percent to $67.5 million, aided by a strong Auckland economy. The profit margin improved to 22.7 per cent from 22 per cent.
Michael Hill's Canadian unit improved ebit 47 per cent to C$7.4 million as revenue jumped 19 per cent to C$53.3 million. Store numbers increased to 65 from 59 and the profit margin widened to 13.9 per cent from 11.3 per cent.
"The Canadian segment continues to grow and improve as it reaches critical mass in the larger provinces in Canada," the jeweller said.
In the US, the first half was impacted by increased marketing spending, the three-month closure of Woodfield Mall in Chicago, and by the costs associated with opening a new store at Roosevelt Fields in New York, the company said.
The operating loss in the US widened to US$1.5 million from US$600,000 in the year earlier period, although revenue increased 25 per cent to US$7.4 million. The number of stores increased by two to 10.
"We remain confident of further improving our US model over the coming half year and are committed to continuing testing of our model in this lucrative market," the retailer said.
The company said it will assess its Emma & Roe chain at the end of the financial year and decide whether to proceed with a full expansion. The brand, which sells charm bracelets and accessories, was launched in April 2014 and has 11 stores.
Michael Hill will pay a 2.5 cent dividend on April 1, unchanged from the year earlier period.
Its shares last traded at 95 cents and have slid 4 per cent so far this year.
The stock is rated a 'buy' according to three analyst recommendations compiled by Reuters.