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                                                                     Exhibit  11


                           Marks Bros. Jewelers, Inc.
                       Computation of Per Share Earnings





                                          Three Months Ended                   Six Months Ended
                                            -------------------------------     -------------------------------
                                            July 31, 1997     July 31, 1996     July 31, 1997     July 31, 1996  
                                            -------------     -------------     -------------     -------------
                                                       (in thousands, except for per share amounts)
                                                                                                 
                                                                                                                  
Primary earnings per share:                                                                                       
Income before extraordinary gain            $       1,760      $      1,406     $      $2,300     $         548    

Extraordinary gain on extinguishment of                                                                            
debt, net of taxes                                    ---            11,164               ---            11,164    
                                            -------------     -------------     -------------     -------------

Net Income                                  $       1,760     $      12,570     $       2,300     $      11,712    
                                            =============     =============     =============     =============

Average shares outstanding                         10,069             8,164            10,065             6,638    

Common share equivalents under the 1995,                                                                           
1996 and 1997 Option Plans assuming the                                                                            
treasury stock method                                 135               771               129               646    

Additional shares assuming conversion of                                                                           
Class B shares                                          4                 3                 4                3     
                                            -------------     -------------     -------------     -------------

Average number of common shares and                                                                                
common share equivalents outstanding               10,208             8,938            10,198             7,287    
                                            =============     =============     =============     =============

Income before extraordinary gain per share  $        0.17     $        0.16             $0.23      $       0.08    

Extraordinary gain on extinguishment of                                                                            
debt, net of taxes, per share                         ---              1.25               ---              1.53    
                                            -------------     -------------     -------------     -------------

Net Income                                  $        0.17     $        1.41     $        0.23     $        1.61    
                                            =============     =============     =============     =============



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   2
                                                                     Exhibit  11


                           Marks Bros. Jewelers, Inc.
                       Computation of Per Share Earnings





                                                 Three Months Ended                     Six Months Ended
                                            -------------------------------     -------------------------------
                                            July 31, 1997     July 31, 1996     July 31, 1997     July 31, 1996   
                                            -------------     -------------     -------------     -------------
                                                        (in thousands, except for per share amounts)
                                                                                                                   
                                                                                                       
Fully diluted earnings per share:                                                                                     
Income before extraordinary gain            $       1,760     $       1,406     $       2,300     $         548       

Extraordinary gain on extinguishment of                                                                               
debt, net of taxes                                    ---            11,164               ---            11,164       
                                            -------------     -------------     -------------     -------------
Net Income                                  $       1,760     $      12,570     $       2,300     $      11,712       
                                            =============     =============     =============     =============

Average shares outstanding                         10,069             8,164            10,065             6,638       

Common share equivalents under the 1995,                                                                              
1996 and 1997 Option Plans assuming the                                                                               
treasury stock method                                 149               771               148               680       

Additional shares assuming conversion of                                                                              
Class B shares                                          4                 3                 4                 3       
                                            -------------     -------------     -------------     -------------

Average number of common shares and                                                                                   
common share equivalents outstanding               10,222             8,938            10,217             7,321       
                                            =============     =============     =============     =============

Income before extraordinary gain per share  $        0.17     $        0.16     $        0.23     $        0.07       

Extraordinary gain on extinguishment of                                                                               
debt, net of taxes, per share                         ---              1.25               ---              1.53       
                                            -------------     -------------     -------------     -------------
Net Income                                  $        0.17     $        1.41     $        0.23     $        1.60       
                                            =============     =============     =============     =============




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