INDEPENDENT AUDITORS' CONSENT


We consent to the incorporation by reference in Registration Statements
No. 33-19511, No. 33-38019, No. 33-19510, No. 33-63739, No. 33-67121,
No. 333-12737 and No. 333-74682 of II-VI Incorporated on Form S-8 of
our report dated September 13, 2002 (September 25, 2002 as to Note M),
which report expresses an unqualified opinion and includes an
explanatory paragraph relating to a change in the method of accounting
for goodwill amortization in fiscal 2002, appearing in this Annual
Report on Form 10-K/A of II-VI Incorporated and subsidiaries for the year
ended June 30, 2002.


/s/ Deloitte & Touche LLP

Pittsburgh, Pennsylvania
September 30, 2002