Exhibit 31.2

**CERTIFICATION**

I, Borden D. Rosiak, the Chief      Financial Officer of Crystallex International Corporation (the “Company”),      certify that:

| 1. | I have reviewed this annual report on      Form 40-F for the year ended December 31, 2004, of the Company;                                                                                                                                                                                                                                 |
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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 annual          report, fairly present in all material respects the financial condition,          results of operations and cash flows of the Company as of, and for,      the periods presented in this report;                |
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| 4. | The Company’s other certifying          officer and I are responsible for establishing and maintaining disclosure          controls and procedures (as defined in Exchange Act of 1934 Rules 13a-15(e)      and 15d-15(e)) for the Company and have:                                                                                  |
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|    | a.                                                                                                                                                                                                                                                                                                                                         | Designed such disclosure controls and          procedures, or caused such disclosure controls and procedures to be          designed under our supervision, to ensure that material information          relating to the Company, including its consolidated subsidiaries, is          made known to us by others within those entities, particularly during          the period in which this annual report is being prepared; |

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|  | b.     | Evaluated the effectiveness of the Company’s          disclosure controls and procedures and presented in this report our          conclusions about the effectiveness of the disclosure controls and          procedures, as of a end of the period covered by this report based          on such evaluation; and |

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|    | c.                                                                                                                                                                                                                                                                                                                                   | Disclosed in this report any change in          the Company’s internal control over financial reporting that          occurred during the period covered by the annual report that has materially          affected, or is reasonably likely to materially affect, the Company’s          internal control over financial reporting; and |
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| 5. | The Company’s other certifying          officer and I have disclosed, based on our most recent evaluation of          internal control over financial reporting, to the Company’s auditors          and the audit committee of the Company’s board of directors (or      persons performing the equivalent function): |
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|  | a. | All significant deficiencies and material          weaknesses in the design or operation of internal control over financial          reporting which are reasonably likely to adversely affect the Company’s          ability to record, process, summarize and report financial information;          and |
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|  | b.     | Any fraud, whether or not material, that          involves management or other employees who have a significant role          in the Company’s internal control over financial reporting. |

Date: March 31, 2005 

|   | /s/ Borden D. Rosiak                          |
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|   | Borden D. Rosiak      Chief Financial Officer |
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