CERTIFICATION PURSUANT TO
                        18 U.S.C. SECTION 1350,
                        AS ADOPTED PURSUANT TO
             SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In connection with the Annual Report of II-VI Incorporated (the
"Corporation") on Form 10-K for the period ending June 30, 2003 as
filed with the Securities and Exchange Commission on the date hereof
(the "Report"), each of the undersigned officers of the Corporation
certifies, pursuant to 18 U.S.C. S.S. 1350, as adopted pursuant to
Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

(1) The Report fully complies with the requirements of Section 13(a)
    or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all
    material respects, the financial condition and results of operations
    of the Corporation.




Date:  September 26, 2003             /s/ Craig A. Creaturo
                                          Craig A. Creaturo
                                Chief Accounting Officer and Treasurer
                                    (principal financial officer)


*This certification is made solely for purposes of 18 U.S.C. Section
1350, subject to the knowledge standard contained therein, and not for
any other purpose.