6-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13A-16
OR 15D-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2010 Commission File Number: 001-33838

HARRY WINSTON DIAMOND CORPORATION

(Translation of registrant's name into English)

P.O. Box 4569, Station A

Toronto, ON, Canada M5W 4T9

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F [  ] Form 40-F [X]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): [  ]

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): [  ]

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes [  ] No [X]

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): N/A

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

DATED the 11th day of May, 2010.

HARRY WINSTON DIAMOND CORPORATION
(Registrant)

By: /s/ LYLE R. HEPBURN                           
       Name: Lyle R. Hepburn
       Title: Corporate Secretary

EXHIBIT INDEX

EXHIBIT	DESCRIPTION OF EXHIBIT
99.1	Confirmation of mailing issued by CIBC Mellon Trust Company regarding the delivery of annual meeting materials to registered shareholders of Harry Winston Diamond Corporation.

EX-99.1

Exhibit 99.1

May 10, 2010

Nova Scotia Securities Commission	Securities Commission of Newfoundland and Labrador
Alberta Securities Commission	Saskatchewan Financial Services Commission, Securities Division
The Manitoba Securities Commission	New Brunswick Securities Commission
Ontario Securities Commission	British Columbia Securities Commission
Prince Edward Island Securities Office	Autorité des marchés financiers
Registrar of Securities, Northwest Territories	Registrar of Securities, Yukon
Registrar of Securities, Nunavut

Dear Sirs:

RE:      HARRY WINSTON DIAMOND CORPORATION

The following were sent by prepaid mail to all registered shareholders of the above-mentioned Company on May 10, 2010:

X	Proxy
X	Notice of Meeting/Information Circular
X	Annual Report for the Fiscal Year Ended January 31, 2010
X	Request for Financial Statements Form

However, we have not mailed to shareholders in cases where on three consecutive occasions, notices or other documents have been returned undelivered by the Post Office.

The above disclosure document(s) are filed with you as agent for the Company in compliance with the regulations.

Yours very truly,

Anna Fan
Associate Manager, Trust Central Services