Form FWP for iShares Silver Trust
   Free Writing Prospectus
   Filed Pursuant to Rule 433
   Registration No. 333-173755
   July 20, 2011

LOGO

iShares Silver Trust (the “Silver Trust”) has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus and other documents the Silver Trust has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting www.iShares.com or EDGAR on the SEC website at www.sec.gov. Alternatively, the Silver Trust will arrange to send you the prospectus if you request it by calling toll-free 1-800-474-2737.

iShares Gold Trust (“Gold Trust”) has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus and other documents the Gold Trust has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting www.iShares.com or EDGAR on the SEC website at www.sec.gov. Alternatively, the Gold Trust will arrange to send you the prospectus if you request it by calling toll-free 1-800-474-2737.

Investing involves risk, including possible loss of principal. Neither the iShares Gold Trust nor the iShares Silver Trust (collectively, the “Trusts”) is an investment company registered under the Investment Company Act of 1940 or a commodity pool for purposes of the Commodity Exchange Act. Shares of the Trusts are not subject to the same regulatory requirements as mutual funds. Because shares of the Trusts are expected to reflect the price of the silver and gold held by the Silver Trust and the Gold Trust, respectively, the market price of the shares will be as unpredictable as the prices of silver and gold have historically been. Additionally, shares of the Trusts are bought and sold at market price (not NAV). Brokerage commissions will reduce returns.

Shares of the Trusts are not deposits or other obligations of or guaranteed by BlackRock, Inc., and its affiliates, and are not insured by the Federal Deposit Insurance Corporation or any other governmental agency.

BlackRock Asset Management International Inc. (“BAMII”) is the sponsor of the Trusts. BlackRock Fund Distribution Company (“BFDC”), a subsidiary of BAMII, assists in the promotion of the Trusts. BAMII is an affiliate of BlackRock, Inc. ©2011 BlackRock Institutional Trust Company, N.A. All rights reserved. iShares® is a registered trademark of BlackRock Institutional Trust Company, N.A. BlackRock is a registered trademark of BlackRock, Inc. All other trademarks, servicemarks or registered trademarks are the property of their respective owners. iS-4942-0811