Online jewelry retailer Blue Nile Inc. said Tuesday that its first-quarter profit fell, but its international sales more than doubled, which helped the company to mitigate a weak U.S. consumer environment.

Net income for the quarter fell to $2.57 million, or 16 cents per share, compared with $3.16 million, or 19 cents, in the same period last year.

In a separate announcement, the Seattle-based company said it has appointed Marc Stolzman as chief financial officer, succeeding Robin Easton, who resigned in March.

Stolzman joins the company June 9 from Imperium Renewables, a biodiesel refining and manufacturing technology company.

Blue Nile ...