• by Sarah Mahoney  @mahoney_sarah, September 24, 2010

Despite lingering concerns about the economy, a new report from American Express Business Insights says luxury sales are up, gaining 9% in the second quarter.

While spending in each of the four categories it analyzed increased, furniture and home furnishings showed the biggest improvement, up 21%, followed by sales at luxury department stores, which rose 15% in the quarter. (Women powered those department stores sales, making 69% of purchases. And 22% of all charges came from shoppers aged 36 to 45.)

While sales also rose in the apparel and accessories (up 9%) and jewelry sectors (up 12%), the report says growth slowed in each of those categories as the quarter progressed, indicating renewed fears about the fledgling recovery. Jewelry sales gained only 3% in June, for example, the smallest increase in the last eight months.