II-VI Incorporated to Webcast FY 2011 First Quarter Earnings Conference Call

II-VI Incorporated (Nasdaq: IIVI) today announced that it intends to release its
fiscal 2011 first quarter results for the period ended September 30, 2010 on
Tuesday, October 26, 2010 before the market opens and will post these results on
the Company's web site at www.ii-vi.com.

In conjunction with this release and to review the Company's financial results,
market trends and future outlook, the Company will host a conference call that
will be broadcast live over the Internet that same day.

Individuals wishing to participate in the webcast, to be held at 9:00 a.m.
Eastern Time on Tuesday, October 26, 2010, can access the event at the Company's
web site by visiting www.ii-vi.com or via http://tinyurl.com/23ymwqj. An online
archive of the broadcast will be available within four hours of the live call,
will remain available for two weeks and can be accessed through the Company's
website.

II-VI Incorporated, a worldwide leader in engineered materials and components,
is a vertically-integrated manufacturing company that creates and markets
products for a diversified customer base including industrial manufacturing,
military and aerospace, high-power electronics and telecommunications, and
thermoelectric applications. Headquartered in Saxonburg, Pennsylvania, with
manufacturing, sales, and distribution facilities worldwide, the Company
produces numerous crystalline compounds including zinc selenide for infrared
laser optics, silicon carbide for high-power electronic and microwave
applications, and bismuth telluride for thermoelectric coolers.

In the Company's infrared optics business, II-VI Infrared manufactures optical
and opto-electronic components for industrial laser and thermal imaging systems,
and HIGHYAG Lasertechnologie GmbH (HIGHYAG) manufactures fiber-delivered beam
delivery systems and processing tools for industrial lasers. In the Company's
near-infrared optics business, VLOC manufactures near-infrared and visible light
products for industrial, scientific, military and medical instruments and laser
gain materials and products for solid-state YAG and YLF lasers. Photop
Technologies, Inc. (Photop) manufactures crystal materials, optics, microchip
lasers and optoelectronic modules for use in optical communication networks and
other diverse consumer and commercial applications. In the Company's military &
materials business, Exotic Electro-Optics (EEO) manufactures infrared products
for military applications, and Pacific Rare Specialty Metals & Chemicals (PRM)
produces and refines selenium and tellurium materials. In the Company's Compound
Semiconductor Group, the Wide Bandgap Materials (WBG) group manufactures and
markets single crystal silicon carbide substrates for use in the solid-state
lighting, wireless infrastructure, RF electronics and power switching
industries; Marlow Industries, Inc. (Marlow) designs and manufactures
thermoelectric cooling and power generation solutions for use in defense, space,
photonics, telecommunications, medical, consumer and industrial markets; and the
Worldwide Materials Group (WMG) provides expertise in materials development,
process development and manufacturing scale up.

This press release contains forward-looking statements based on certain
assumptions and contingencies that involve risks and uncertainties. The
forward-looking statements are made pursuant to the safe harbor provisions of
the Private Securities Litigation Reform Act of 1995 and relate to the Company's
performance on a going-forward basis. The forward-looking statements in this
press release involve risks and uncertainties, which could cause actual results,
performance or trends to differ materially from those expressed in the
forward-looking statements herein or in previous disclosures. The Company
believes that all forward-looking statements made by it have a reasonable basis,
but there can be no assurance that management's expectations, beliefs or
projections as expressed in the forward-looking statements will actually occur
or prove to be correct. In addition to general industry and economic
conditions, factors that could cause actual results to differ materially from
those discussed in the forward-looking statements in this press release include,
but are not limited to: (i) the failure of any one or more of the assumptions
stated above to prove to be correct; (ii) the risks relating to forward-looking
statements and other "Risk Factors" discussed in the Company's Annual Report on
Form 10-K for the fiscal year ended June 30, 2010; (iii) purchasing patterns
from customers and end-users; (iv) timely release of new products, and
acceptance of such new products by the market; (v) the introduction of new
products by competitors and other competitive responses; and/or (vi) the
Company's ability to devise and execute strategies to respond to market
conditions.

CONTACT: II-VI Incorporated
Craig A. Creaturo, Chief Financial Officer and Treasurer
(724) 352-4455
creaturo@ii-vi.com