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Exhibit 31.1

CertificationPursuant to Section 302 of the
Sarbanes-Oxley Act of 2002

I, Robert Fung, certify that:

|1. | I have reviewed this annual report on Form 40-F of
      Crystallex International Corporation;                                                                                                                                                                                                                                                      
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|2. | Based on my knowledge, this report does not contain any
      untrue statement of a material fact or omit to state a material fact
      necessary to make the statements made, in light of the circumstances under
      which such statements were made, not misleading with respect to the period
      covered by this report;                  
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|3. | Based on my knowledge, the financial statements, and other
      financial information included in this report, fairly present in all
      material respects the financial condition, results of operations and cash
      flows of the issuer as of, and for, the periods presented in this report;                                               
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|4. | The issuers other certifying officer and I are responsible
      for establishing and maintaining disclosure controls and procedures (as
      defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal
      control over financial reporting (as defined in Exchange Act Rules
      13a-15(f) and 15d-15(f)) for the issuer and have:
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|   | d.                                                                                                                                                                                                                                                                                                                                                  
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|5. | The issuers other certifying officer and I have disclosed,
      based on our most recent evaluation of internal control over financial
      reporting, to the issuers auditors and the audit committee of the
      issuers board of directors (or persons performing the equivalent
      functions):                                         
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|   | a.                                                                                                                                                                                                                                                                                                                                                  
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|   | b.                                                                                                                                                                                                                                                                                                                                                  

|Date: March 31, 2011 |        | /s/ Robert Fung        
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|                     | Name:  | Robert Fung            
|                     | Title: | Chief Executive Officer

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