PURCHASE OPTION

Exhibit 4.2

THE REGISTERED HOLDER OF THIS PURCHASE OPTION BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE OPTION EXCEPT AS HEREIN PROVIDED AND THE REGISTERED HOLDER OF THIS PURCHASE OPTION AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS PURCHASE OPTION FOR A PERIOD OF ONE YEAR FOLLOWING THE EFFECTIVE DATE (DEFINED BELOW) TO ANYONE OTHER THAN (I) EARLYBIRDCAPITAL, INC. (“EBC”) OR AN UNDERWRITER OR A SELECTED DEALER IN CONNECTION WITH THE OFFERING, OR (II) A BONA FIDE OFFICER OR PARTNER OF EBC OR OF ANY SUCH UNDERWRITER OR SELECTED DEALER.

THIS PURCHASE OPTION IS NOT EXERCISABLE PRIOR TO THE LATER OF THE CONSUMMATION BY CHINA UNISTONE ACQUISITION CORPORATION (“COMPANY”) OF A MERGER, CAPITAL STOCK EXCHANGE, ASSET ACQUISITION OR OTHER SIMILAR BUSINESS COMBINATION (“BUSINESS COMBINATION”) (AS DESCRIBED MORE FULLY IN THE COMPANY’S REGISTRATION STATEMENT (DEFINED HEREIN)) OR NOVEMBER 18, 2005.  VOID AFTER 5:00 P.M. EASTERN TIME, NOVEMBER 17, 2009.

UNIT PURCHASE OPTION

For the Purchase of

__________ Units

of

CHINA UNISTONE ACQUISITION CORPORATION

1.             Purchase Option .

THIS CERTIFIES THAT, in consideration of $_________ duly paid by or on behalf of ________ (“Holder”), as registered owner of this Purchase Option, to China Unistone Acquisition Corporation (“Company”), Holder is entitled, at any time or from time to time upon the later of the consummation of a Business Combination or November 18, 2005 (“Commencement Date”), and at or before 5:00 p.m., Eastern Time, November 17, 2009 (“Expiration Date”), but not thereafter, to subscribe for, purchase and receive, in whole or in part, up to ___________ (_________) units (“Units”) of the Company, each Unit consisting of one share of common stock of the Company, par value $.0001 per share (“Common Stock”), and two warrants (“Warrant(s)”) expiring four years from the effective date (“Effective Date”) of the registration statement (“Registra­tion Statement”) pursuant to which Units are offered for sale to the public (“Offering”).  Each Warrant is the same as the warrants included in the Units being registered for sale to the public by way of the Registration Statement (“Public War­rants”) except that the Warrants have an exercise price of $6.25 per share.  If the Expiration Date is a day on which banking institutions are authorized by law to close, then this Purchase Option may be exercised on the next succeeding day which is not such a day in accordance with the terms herein.  During the period ending on the Expiration Date, the Company agrees not to take any action that would terminate the Purchase Option.  This Purchase Option is initially exercisable at $9.90 per Unit so purchased; provided,

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however, that upon the occurrence of any of the events specified in Section 6 hereof, the rights granted by this Purchase Option, including the exercise price per Unit and the number of Units (and shares of Common Stock and Warrants) to be received upon such exercise, shall be adjusted as therein specified.  The term “Exercise Price” shall mean the initial exercise price or the adjusted exercise price, depending on the context.

2.             Exercise .

2.1           Exercise Form .  In order to exercise this Purchase Option, the exercise form attached hereto must be duly executed and completed and delivered to the Company, together with this Purchase Option and payment of the Exercise Price for the Units being purchased payable in cash or by certified check or official bank check.  If the subscription rights represented hereby shall not be exercised at or before 5:00 p.m., Eastern time, on the Expiration Date this Purchase Option shall become and be void without further force or effect, and all rights represented hereby shall cease and expire.

2.2           Legend .  Each certificate for the securities purchased under this Purchase Option shall bear a legend as follows unless such securities have been registered under the Securities Act of 1933, as amended (“Act”):

“The securities represented by this certificate have not been registered under the Securities Act of 1933, as amended (“Act”) or applicable state law.  The securities may not be offered for sale, sold or otherwise transferred except pursuant to an effective registration statement under the Act, or pursuant to an exemption from registration under the Act and applicable state law.”

2.3           Cashless Exercise .

2.3.1        Determination of Amount .  In lieu of the payment of the Exercise Price multiplied by the number of Units for which this Purchase Option is exercisable (and in lieu of being entitled to receive Common Stock and Warrants) in the manner required by Section 2.1, the Holder shall have the right (but not the obligation) to convert any exercisable but unexercised portion of this Purchase Option into Units (“Conversion Right”) as follows:  upon exercise of the Conversion Right, the Company shall deliver to the Holder (without payment by the Holder of any of the Exercise Price in cash) that number of shares of Common Stock and Warrants comprising that number of Units equal to the quotient obtained by dividing (x) the “Value” (as defined below) of the portion of the Purchase Option being converted by (y) the Current Market Value (as defined below).  The “Value” of the portion of the Purchase Option being converted shall equal the remainder derived from subtracting (a) (i) the Exercise Price multiplied by (ii) the number of Units underlying the portion of this Purchase Option being converted from (b) the Current Market Value of a Unit multiplied by the number of Units underlying the portion of the Purchase Option being converted.  As used herein, the term “Current Market Value” per Unit at any date means the remainder derived from subtracting (x) the exercise price of the Warrants multiplied by the number of shares of Common Stock issuable upon exercise of the Warrants underlying one Unit from (y) the Current Market Price of the Common Stock multiplied by the number of shares of Common Stock underlying the Warrants and the Common Stock issuable upon exercise of one Unit.  The “Current Market Price” of a share of Common Stock shall mean (i) if the Common Stock is listed on a national securities exchange or quoted on the Nasdaq National Market, Nasdaq SmallCap Market or NASD OTC Bulletin Board (or successor such as the Bulletin Board Exchange), the last sale price of the Common Stock in the principal trading market for the Common Stock as reported by the exchange, Nasdaq or the NASD, as the case may be; (ii) if the Common Stock is not listed on a national securities

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exchange or quoted on the Nasdaq National Market, Nasdaq SmallCap Market or the NASD OTC Bulletin Board (or successor such as the Bulletin Board Exchange), but is traded in the residual over-the-counter market, the closing bid price for the Common Stock on the last trading day preceding the date in question for which such quotations are reported by the Pink Sheets, LLC or similar publisher of such quotations; and (iii) if the fair market value of the Common Stock cannot be determined pursuant to clause (i) or (ii) above, such price as the Board of Directors of the Company shall determine, in good faith.

2.3.2        Mechanics of Cashless Exercise .  The Cashless Exercise Right may be exercised by the Holder on any business day on or after the Commencement Date and not later than the Expiration Date by delivering the Purchase Option with the duly executed exercise form attached hereto with the cashless exercise section completed to the Company, exercising the Cashless Exercise Right and specifying the total number of Units the Holder will purchase pursuant to such Cashless Exercise Right.

2.4           No Obligation to Net Cash Settle . Notwithstanding anything to the contrary contained in this Purchase Option, if the Company is unable to deliver any securities pursuant to the exercise of this Purchase Option as a result of its inability to satisfy its registration requirements set forth in Section 5 hereof, the Company will have no obligation to pay such registered holder any cash or otherwise “net cash settle” the Purchase Option or the Warrants underlying the Purchase Option.

3.             Transfer .

3.1           General Restrictions .  The registered Holder of this Purchase Option, by its acceptance hereof, agrees that it will not sell, transfer, assign, pledge or hypothecate this Purchase Option for a period of one year following the Effective Date to anyone other than (i) EBC or an underwriter or a selected dealer in connection with the Offering, or (ii) a bona fide officer or partner of EBC or of any such underwriter or selected dealer.  On and after the second anniversary of the Effective Date, transfers to others may be made subject to compliance with or exemptions from applicable securities laws.  In order to make any permitted assignment, the Holder must deliver to the Company the assignment form attached hereto duly executed and completed, together with the Purchase Option and payment of all transfer taxes, if any, payable in connection therewith.  The Company shall within five business days transfer this Purchase Option on the books of the Company and shall execute and deliver a new Purchase Option or Purchase Options of like tenor to the appropriate assignee(s) expressly evidencing the right to purchase the aggregate number of Units purchasable hereunder or such portion of such number as shall be contemplated by any such assignment.

3.2           Restrictions Imposed by the Act .  The securities evidenced by this Purchase Option shall not be transferred unless and until (i) the Company has received the opinion of counsel for the Holder that the securities may be transferred pursuant to an exemption from registration under the Act and applicable state securities laws, the availability of which is established to the reasonable satisfaction of the Company (the Company hereby agreeing that the opinion of Graubard Miller shall be deemed satisfactory evidence of the availability of an exemption), or (ii) a registration statement or a post-effective amendment to the Registration Statement relating to such securities has been filed by the Company and declared effective by the Securities and Exchange Commission and compliance with applicable state securities law has been established.

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4.             New Purchase Options to be Issued .

4.1           Partial Exercise or Transfer .  Subject to the restric­tions in Section 3 hereof, this Purchase Option may be exercised or assigned in whole or in part.  In the event of the exercise or assignment hereof in part only, upon surrender of this Purchase Option for cancellation, together with the duly executed exercise or assignment form and funds sufficient to pay any Exercise Price and/or transfer tax, the Company shall cause to be delivered to the Holder without charge a new Purchase Option of like tenor to this Purchase Option in the name of the Holder evidencing the right of the Holder to purchase the number of Units purchasable hereunder as to which this Purchase Option has not been exercised or assigned.

4.2           Lost Certificate .  Upon receipt by the Company of evidence satisfactory to it of the loss, theft, destruction or mutilation of this Purchase Option and of reasonably satisfactory indemnification or the posting of a bond, the Company shall execute and deliver a new Purchase Option of like tenor and date.  Any such new Purchase Option executed and delivered as a result of such loss, theft, mutilation or destruction shall constitute a substitute contractual obligation on the part of the Company.

5.             Registration Rights .

5.1           Demand Registration .

5.1.1        Grant of Right .  The Company, upon written demand (“Initial Demand Notice”) of the Holder(s) of at least 51% of the Purchase Options and/or the underlying Units and/or the underlying securities (“Majority Holders”), agrees to register on one occasion, all or any portion of the Purchase Options requested by the Majority Holders in the Initial Demand Notice and all of the securities underlying such Purchase Options, including the Units, Common Stock, the Warrants and the Common Stock underlying the Warrants (collectively, the “Registrable Securities”).  On such occasion, the Company will file a registration statement or a post-effective amendment to the Registration Statement covering the Registrable Securities within sixty days after receipt of the Initial Demand Notice and use its best efforts to have such registration statement or post-effective amendment declared effective as soon as possible thereafter.  The demand for registration may be made at any time during a period of five years beginning on the Effective Date.  The Company covenants and agrees to give written notice of its receipt of any Initial Demand Notice by any Holder(s) to all other registered Holders of the Purchase Options and/or the Registrable Securi­ties within ten days from the date of the receipt of any such Initial Demand Notice.

5.1.2        Terms .  The Company shall bear all fees and expenses attendant to registering the Registrable Securities, including the expenses of any legal counsel selected by the Holders to represent them in connection with the sale of the Registrable Securities, but the Holders shall pay any and all underwriting commissions.  The Company agrees to use its reasonable best efforts to qualify or register the Registrable Securities in such States as are reasonably requested by the Majority Holder(s); provided, however, that in no event shall the Company be required to register the Registrable Securities in a State in which such registration would cause (i) the Company to be obligated to qualify to do business in such State, or would subject the Company to taxation as a foreign corporation doing business in such jurisdiction or (ii) the principal stockholders of the Company to be obligated to escrow their shares of capital stock of the Company.  The Company shall cause any registration state­ment or post-effective amendment filed pursuant to the demand rights granted under Section 5.1.1 to remain effective for a period of nine consecutive months from the effective date of such registration statement or post-effective amendment.

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5.2           “Piggy-Back” Registration .

5.2.1        Grant of Right .  In addition to the demand right of registration, the Holders of the Purchase Options shall have the right for a period of seven years commencing on the Effective Date, to include the Registrable Securities as part of any other registration of securities filed by the Company (other than in connection with a transaction contemplated by Rule 145(a) promulgated under the Act or pursuant to Form S-8); provided, however, that if, in the written opinion of the Company’s managing underwriter or underwriters, if any, for such offering, the inclusion of the Registrable Securities, when added to the securities being registered by the Company or the selling stockholder(s), will exceed the maximum amount of the Company’s securities which can be marketed (i) at a price reasonably related to their then current market value, and (ii) without materially and adversely affecting the entire offering, then the Company will still be required to include the Registrable Securities, but may require the Holders to agree, in writing, to delay the sale of all or any portion of the Registrable Securities for a period of 90 days from the effective date of the offering, provided, further, that if the sale of any Registrable Securities is so delayed, then the number of securities to be sold by all stockholders in such public offering during such 90 day period shall be apportioned pro rata among all such selling stockholders, including all holders of the Registrable Securities, according to the total amount of securities of the Company owned by said selling stockholders, including all holders of the Registrable Securities.

5.2.2        Terms .  The Company shall bear all fees and expenses attendant to registering the Registrable Securities, including the expenses of any legal counsel selected by the Holders to represent them in connection with the sale of the Registrable Securities but the Holders shall pay any and all underwriting commissions related to the Registrable Securities.  In the event of such a proposed regis­tration, the Company shall furnish the then Holders of outstand­ing Registrable Securities with not less than fifteen days written notice prior to the proposed date of filing of such registration state­ment.  Such notice to the Holders shall continue to be given for each applicable registration statement filed (during the period in which the Purchase Option is exercisable) by the Company until such time as all of the Registrable Securities have been registered and sold.  The holders of the Registrable Securities shall exer­cise the “piggy-back” rights provided for herein by giving writ­ten notice, within ten days of the receipt of the Com­pany’s notice of its intention to file a registration state­ment.  The Company shall cause any registration statement filed pursuant to the above “piggyback” rights to remain effective for at least nine months from the date that the Holders of the Registrable Securities are first given the opportunity to sell all of such securities.

5.3           Intentionally Omitted .

5.4           General Terms .

5.4.1        Indemnification . The Company shall indemnify the Holder(s) of the Registrable Securities to be sold pursuant to any registration statement hereunder and each person, if any, who controls such Holders within the meaning of Section 15 of the Act or Section 20(a) of the Securities Exchange Act of 1934, as amended (“Exchange Act”), against all loss, claim, damage, expense or liability (including all reasonable attorneys’ fees and other expenses reasonably incurred in investigating, prepar­ing or defending against litigation, commenced or threatened, or any claim whatsoever whether arising out of any action between the underwriter and the Company or between the underwriter and any third party or otherwise) to which any of them may become subject under the Act, the Exchange Act or other­wise, aris