Signet had a profit of $96.6 million, or $1.20 per share, up from $91.8 million, or $1.13 per share, last year.
Excluding items, adjusted earnings increased to $1.29 per share from $1.13 a share. The company projected adjusted earnings of $1.24 to $1.28 per share.
Revenue was $1.06 billion, up 6.3%. Analysts estimated $1.07 billion.
Same-store sales gained 3.3%, as Signet expected growth of 3% to 4%.
For the second quarter, the company expects comparable store sales to increase 3% to 5%. Adjusted EPS is expected to be 95 cents to $1.01, an increase of 13.1% to 20.2%
Analysts surveyed by Thomson Reuters projected 98 cents a share in earnings.
"We rate SIGNET JEWELERS LTD (SIG) a BUY. This is based on the convergence of positive investment measures, which should help this stock outperform the majority of stocks that we rate. The company's strengths can be seen in multiple areas, such as its revenue growth, largely solid financial position with reasonable debt levels by most measures, solid stock price performance, good cash flow from operations and growth in earnings per share. We feel these strengths outweigh the fact that the company has had somewhat disappointing return on equity."