NEW YORK ( TheStreet) -- Harry Winston Diamond (NYSE: HWD) is trading at unusually high volume Tuesday with 1.6 million shares changing hands. It is currently at four times its average daily volume and trading down 40 cents (-3%) at $12.85 as of 2:40 p.m. ET. Harry Winston has a market cap of $1.13 billion and is part of the basic materials sector and metals & mining industry. Shares are up 24.5% year to date as of the close of trading on Monday. Harry Winston Diamond Corporation, a diamond company, engages in mining and retailing diamonds in Canada and internationally. The company has a P/E ratio of 44.3, equal to the average metals & mining industry P/E ratio and above the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Harry Winston as a hold. The company's strengths can be seen in multiple areas, such as its growth in earnings per share, compelling growth in net income and revenue growth. However, as a counter to these strengths, we find that the stock has had a generally disappointing performance in the past year. You can view the full Harry Winston Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.