Free Writing Prospectus

Filed Pursuant to Rule 433

Registration No. 333-184107

December 14, 2012

FeedbackHome iShares ETFs SLV Overview 1 Year3 Years5 Years10 YearsSince InceptionSLV-23.08%24.16%16.07%--13.20%Benchmark * -22.67%24.78%16.65%18.72%13.77%* Source: Bloomberg. The iShares Silver Trust’s silver and other assets are valued on the basisof each day’s announced London Silver Fix, the price for an ounce of silver set by three marketmaking members of the London Bullion Market Association, minus all accrued fees, expensesand liabilities.LabelValueBeta vs S&P 5001.77Standard Deviation (3 year) 41.72%DescriptionValuePremium/Discount Click here for important information about Premium/Discount-0.95%NAV Click here for information on how NAV is determined$33.76Mid-Point $33.440Closing Price $33.35DescriptionValueTotal Net Assets$10,794,952,505Shares Outstanding329,250,000Sponsor’s Fee0.50%Inception Date4/21/2006Ounces of Silver in Trust318,941,345.000Tonnes of Silver in Trust 9,920.18Indicative Basket SilverAmount48,428.400Basket Silver Amount48,429.100NAV per SLV in Silver96.857%BenchmarkLondon Silver FixPriceIndex TickerSLVRLN<index>Net Asset Valueas of 10/8/2012$32.79$-0.97 -2.87%Priceas of 10/5/2012$33.45$-0.48 -1.41%Why iShares? – iSharesdelivers quality products that canhelp you navigate today’s volatilemarkets – As yourpartner, iShares helps youexecute investment ideas withinsights and support –iShares is an industry leader inmaking investing clear, fair, andefficient for youRelated ResourcesWorkarea - shared_wa (Change)|About iShares|Contact Us|USA (Change)Welcome, Paragi (Not Paragi?)|Sign In|ProfileEmailPrintSilver TrustInception date: 4/21/2006The iShares Silver Trust is not a standard ETF. The Trust is not an investment company registered under the Investment Company Act of 1940 or a commodity pool for purposes of theCommodity Exchange Act. Shares of the Trust are not subject to the same regulatory requirements as mutual funds. Before making an investment decision, you should carefullyconsider the risk factors and other information included in the prospectus.Please read the prospectus carefully before investingSLVDownload current prospectusAccess periodic SEC reportsFact SheetProspectusData Update ScheduleOverviewPerformanceDocumentsPOTENTIAL USEAccess silverEXPOSUREThe Trust holds silver bullion and isdesigned to provide investors with asimple and cost-effective method togain exposure to the price of silver.TRUST NAMEiShares Silver TrustAvg. Annualized Total Returns (NAV) qtr. as of 6/30/2012View all performanceFundamentals as of 9/28/2012Premium/Discount as of 10/5/2012Profile as of 10/8/2012Quotes & ChartsProfessional qualityIndividual choiceResponsible innovationiShares Silver Trust FAQVault Inspection CertificatesQuotes & ChartsPremium/DiscountFIND AN iSHARES ETF ProductsSolutionsInsightsToolsResources Premium/Discount

The performance quoted represents pastperformance and does not guarantee future results.Investment return and principal value of aninvestment will fluctuate so that an investor’s shares,when sold or redeemed, may be worth more or lessthan the original cost. Current performance may belower or higher than the performance quoted. Thisinformation must be accompanied by standardizedreturns. For standardized returns and performancedata current to the most recent month end, click the”Performance” tab above. Silver Spot Price Source: TheBullionDesk.com Time stamp is GMT (Greenwich Mean Time). Click here for Important Disclosure. Trading Information Identifier Type Symbol Ticker SLV Index Ticker SLVRLN<index> NAV SLV.NV Underlying Trading Value SLV.IV Shares Outstanding SLV.SO CUSIP 46428Q109 Options Available Products Solutions Insights Tools Resources Find an iShares ETF Model Portfolios Market Updates: Bi-weekly Portfolio Construction Tools Understanding ETFs Our Core Products Active/Index insights into market-shaping Asset Class Illustrator Fundamentals Fund Screener events Benefits Index Sector & Country Exposure Equity Perspectives: Monthly in-depth Fixed Income ETFs Fixed Income Portfolio Builder Fixed Income Investment Strategies reports on global markets International ETFs See All iShares ETFs Investment Directions: Monthly Correlation Calculator iShares Core Products outlooks for the global equity and Fixed Income Fund Fact Sheets fixed income markets iShares Mobile App for iPhone Financial, Legal and Tax Equity Income Prospectuses White Papers: Covering critical Documents Tax Strategies Research & Performance Tools Equity Index Data topics shaping the markets Fund Fact Sheets International Fund Comparison Marketing Publications Fixed Income Index Data Gold Fund Screener Videos Sector Strategies Quotes & Charts Audio Investment Goals Index Returns Chart Webinars and Events iShares in 401(k) Retirement Plans Index Comparison Tool Continuing Education Credits Why iShares Tracking Error Chart Premium/Discount Chart Historical Returns Tool Performance Reports Tool Company Information: About iShares | Press Room | Careers | Contact Us Other Products: iShares 401k | iShares 529 | iPath ETNs Help: FAQs | Glossary Subscribe to iShares: Literature | Podcasts Legal Info: Privacy Policy | Terms & Conditions | Prospectus | Regulatory Follow Us On: Disclosures About BlackRock | BlackRock Investor Relations | Contact BlackRock | Careers with BlackRock 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

iShares Silver Trust (SLV): Overview - iShares by calling toll-free 1-800-474-2737. London Silver Fix Price returns are for illustrative purposes only and do not represent actual iShares Silver Trust performance. London Silver Fix Price returns do not reflect any fees, transaction costs or expenses. London Fix is the price per ounce of silver set by three market making members of the London Bullion Market Association at approximately 12:00 noon, London time, on each working day. The sponsor of the trust is iShares Delaware Trust Sponsor LLC (the “Sponsor”). BlackRock Investments, LLC (“BRIL”), assists in the promotion of the Trust. The Sponsor and BRIL are affiliates of BlackRock, Inc. Investing involves risk, including possible loss of principal. Because shares of the Silver Trust are intended to reflect the price of the silver held by the Silver Trust, the market price of the shares is subject to fluctuations similar to those affecting silver prices. Additionally, shares of the Silver Trust are bought and sold at market price, not at net asset value (“NAV”). Brokerage commissions will reduce returns. Shares of the Silver Trust are intended to reflect, at any given time, the market price of silver owned by the Trust at that time less the Trust’s expenses and liabilities. The price received upon the sale of shares of the Silver Trust, which trade at market price, may be more or less than the value of the silver represented by such shares. If an investor sells the shares at a time when no active market for them exists, such lack of an active market will most likely adversely affect the price received for the shares. For a more complete discussion of risk factors relative to the Silver Trust, carefully read the prospectus. Following an investment in the iShares Silver Trust, several factors may have the effect of causing a decline in the prices of silver and a corresponding decline in the price of the shares. Among them: (i) A change in economic conditions, such as a recession, can adversely affect the price of silver. Silver is used in a wide range of industrial applications, and an economic downturn could have a negative impact on its demand and, consequently, its price and the price of the shares. (ii) A significant change in the attitude of speculators and investors towards silver. Should the speculative community take a negative view towards silver, a decline in world silver prices could occur, negatively impacting the price of the shares. (iii) A significant increase in silver price hedging activity by silver producers. Traditionally, silver producers have not hedged to the same extent as other producers of precious metals (gold, for example) do. Should there be an increase in the level of hedge activity of silver producing companies, it could cause a decline in world silver prices, adversely affecting the price of the shares. Silver Spot Prices provided by The Bullion Desk. No warranty is given for the accuracy of these prices and no liability is accepted for reliance thereon. Prices are provided on a reasonable efforts basis and delays may occur both because of the delay in third parties communicating the information to the site and because of delays inherent in posting information over the internet. Prices shown are indicative only and do not represent actionable quotations on prices of actual trades. Although shares of the iShares Silver Trust may be bought or sold on the secondary market through any brokerage account, shares are not redeemable except in large aggregated units called “Baskets”. Only registered broker-dealers that become authorized participants by entering into a contract with the sponsor and the trustee of the Trust may purchase or redeem Baskets. The amount of silver represented by shares of the Silver Trust will decrease over the life of the Silver Trust due to sales of silver necessary to pay the sponsor’s fee and Silver Trust expenses. Without increases in the price of silver sufficient to compensate for that decrease, the price of the shares will also decline, and investors will lose money on their investment in the shares. The Silver Trust will have limited duration. The liquidation of the trust may occur at a time when the disposition of the trust’s silver will result in losses to investors. Although market makers will generally take advantage of differences between the NAV and the trading price of Silver Trust shares through arbitrage opportunities, there is no guarantee that they will do so. There is no guarantee an active trading market will develop for the shares, which may result in losses on your investment at the time of disposition of your shares. The value of the shares of the Silver Trust will be adversely affected if silver owned by the trust is lost or damaged in circumstances in which the Silver Trust is not in a position to recover the corresponding loss. The Silver Trust is a passive investment vehicle. This means that the value of your shares may be adversely affected by trust losses that, if the trust had been actively managed, might have been avoidable. Shares of the iShares Silver Trust 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. When comparing commodities and the Silver Trust, it should be remembered that the sponsor’s fee associated with the Trust is not borne by investors in individual commodities. Buying and selling shares of the Silver Trust will result in brokerage commissions. Because the expenses involved in an investment in physical silver will be dispersed among all holders of shares of the Silver Trust, an investment in the Silver Trust may represent a cost-efficient alternative to investments in silver for investors not otherwise able to participate directly in the market for physical silver. Certain sectors and markets perform exceptionally well based on current market conditions and the iShares Silver Trust can benefit from that performance. Achieving such exceptional returns involves the risk of volatility and investors should not expect that such results will be repeated. Options involve risk and are not suitable for all investors. Prior to buying or selling an option, a person must receive a copy of Characteristics and Risks of Standardized Options. Copies of this document may be obtained from your broker, from any exchange on which options are traded or by contacting The Options Clearing Corporation, One North Wacker Dr., Suite 500, Chicago, IL 60606 (1-888-678-4667). The document contains information on options issued by The Options Clearing Corporation. The document discusses exchange traded options issued by The Options Clearing Corporation and is intended for educational purposes. No statement in the document should be construed as a recommendation to buy or sell a security or to provide investment advice. If you need further information, please feel free to call the Options Industry Council Helpline. They will be able to provide you with balanced options education and tools to assist you with your iShares options questions and trading. The Options Industry Council Helpline phone number is 1-888-Options (1-888-678-4667) and their website is www.888options.com. Net Asset Value (NAV) is determined as specified in the prospectus: the iShares Silver Trust’s silver and other assets are valued on the basis of each day’s announced London Fix, the price for an ounce of silver set by three market making members of the London Bullion Market Association, minus all accrued fees, expenses and liabilities. The Premium/Discount table presents information about the difference between the daily market price for shares of the iShares Silver Trust and the iShares Silver Trust’s net asset value. The market price is determined using the midpoint between the highest bid and the lowest offer on the listing exchange, as of the time that the iShares Silver Trust’s NAV is calculated (usually 4:00 p.m. eastern time). The table above shows the premium or discount expressed as a percentage of NAV. Although market makers will generally take advantage of differences between the NAV and the trading price of iShares Trust shares through arbitrage opportunities, there is no guarantee that they will do so. Why is there a difference between NAV and Closing Price? A major reason for the difference is that Timing Discrepancies can exist between the NAV and Closing Price (last trade) reported above. Information is constantly flowing to and among investors, corporations, and financial institutions that affects their outlook on the financial markets and the value of securities. This process, known as Price Discovery, is why market prices change and evolve throughout the trading day. It is important to note that even when markets are closed, the price discovery process continues 24 hours a day, 7 days a week, 365 days a year. Possible Timing Discrepancies: Close of Trading Times: The NAV of the iShares Silver Trust normally is calculated using prices as of 4:00 p.m. ET. Shares of the iShares Silver Trust (“iShares”) normally trade on the NYSE Arca Exchange until 4:15 p.m. ET. Price discovery between 4:00 p.m. and 4:15 p.m. ET may result in a difference between the NAV and the Closing Price of the iShares Silver Trust. Time of Last Trade: Trading generally takes place throughout the normal trading hours for the iShares Silver Trust on the listing exchange. At times, many trades are placed in rapid succession. At other times, little or no trading activity is taking place. It is important to note that the date/time of the last trade (which is recorded as the Closing Price) may not take place at exactly 4:00 p.m. ET whe n the iShares Silver Trust normally calculates NAV. The date/time of the last trade sometimes may occur before 4:00 p.m. ET or up until 4:15 p.m. ET as discussed above. Thus, ongoing price discovery may result in a deviation between the price recorded as the Closing Price and the NAV of the iShares Silver Trust shares at 4:00 p.m. ET. © 2000-2012 BlackRock. All rights reserved. iShares® and BlackRock® are registered trademarks of BlackRock Inc., or its subsidiaries in the United States and elsewhere. All other trademarks, servicemarks or registered trademarks are the property of their respective owners.

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