Document:

Striker Energy Corp.: Exhibit 10.2 - Filed by newsfilecorp.com

NONE OF THE SECURITIES TO WHICH THIS PURCHASE AGREEMENT (THE
“AGREEMENT”) RELATES HAVE BEEN REGISTERED UNDER THE UNITED STATES 1933 ACT OF
1933, AS AMENDED (THE “1933 ACT”), OR ANY U.S. STATE SECURITIES LAWS, AND,
UNLESS SO REGISTERED, NONE MAY BE OFFERED OR SOLD, DIRECTLY OR INDIRECTLY, IN
THE UNITED STATES OR TO U.S. PERSONS (AS DEFINED HEREIN) EXCEPT IN ACCORDANCE
WITH THE PROVISIONS OF REGULATION S UNDER THE 1933 ACT, PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE 1933 ACT, OR PURSUANT TO AN AVAILABLE EXEMPTION
FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
1933 ACT AND IN EACH CASE ONLY IN ACCORDANCE WITH APPLICABLE STATE SECURITIES
LAWS.

SHARE PURCHASE AGREEMENT

BETWEEN:

	 	OPEX ENERGY CORP., an Alberta
      corporation, of 1400—350 7th Avenue 	 
	 	S.W., Calgary, Alberta T2P 3N9 	 
	 	  	 
	 	(the “Vendor”) 	 

AND:

	 	MEDCON PHARMA (HONG KONG) LIMITED, a
      Hong Kong corporation, 	 
	 	of 8th Floor, 5 Queen's Road, Hong Kong. 	 
	 	  	 
	 	(the “Purchaser”) 	 

WHEREAS:

A. The Vendor is the registered and beneficial owner of
5,350,000 shares of the common stock of Striker Energy Corp. (the
“Company”), a company incorporated under the laws of the State of
Nevada;

B. The Vendor desires to sell to the Purchaser, and the
Purchaser desires to purchase from the Vendor, 1,050,000 of the Company’s shares
(the “Purchase Shares”) on the terms and conditions hereinafter set forth
in this Agreement; and

C. The parties hereto desire to make certain representations,
warranties and agreements in connection with the proposed purchase and sale of
the Purchase Shares and to set forth various conditions to the transactions
contemplated hereby.

THEREFORE, in consideration of the mutual covenants and
agreements herein contained and other good and valuable consideration (the
receipt and sufficiency of which are hereby acknowledged by each of the
parties), the parties covenant and agree as follows:

1. Purchase and Sale

1.1 On the basis of the representations and warranties of the
parties to this Agreement and subject to the terms and conditions of this
Agreement, the Purchaser agrees to purchase from the Vendor, and the Vendor
agrees to sell to the Purchaser, the Purchase Shares free and clear of all
liens, charges and encumbrances of any kind whatsoever, except any restrictions
that may be imposed by applicable securities laws.

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1.2 The purchase price of the Purchase Shares is the amount of
Twelve Thousand Six Hundred Dollars ($12,600) (the “Purchase
Price”).

1.3 The closing of the purchase and sale of the Purchase Shares
(the “Closing”) shall take place on July 2, 2010 or such other date as
may be mutually agreed by the parties hereto.

2.           
Conditions to Closing and Deliveries by the Parties

2.1 At the Closing, the Vendor will deliver or cause to be
delivered to the Purchaser certificates representing the Purchase Shares
registered in the Purchaser’s name and transferring to the Purchaser good title
to the Purchase Shares, free and clear of all liens, charges and encumbrances of
any kind whatsoever.

2.2 At the Closing, the Purchaser will deliver to Vendor the
Purchase Price.

3.           
Acknowledgements

3.1 The Purchaser acknowledges and agrees that the:

	 	(a) 	
      none of the Purchase Shares have been registered under
      the Securities Act of 1933 (the “1933 Act”), or under any state
      securities or “blue sky” laws of any state of the United States and,
      unless so registered, they may not be offered or sold in the United States
      or, directly or indirectly, to U.S. Persons, as that term is defined in
      Regulation S (“Regulation S”) as promulgated by the Securities and
      Exchange Commission (the “SEC”) under the 1933 Act, except in
      accordance with the provisions of Regulation S, pursuant to an effective
      registration statement under the 1933 Act or pursuant to an exemption
      from, or in a transaction not subject to, the registration requirements of
      the 1933 Act and, in each case, in accordance with applicable state and
      provincial securities laws:

	 	 	 
	 	(b) 	
      the Vendor is an “affiliate” (as defined in Rule 144
      promulgated by the SEC under the 1933 Act) of the Company and as a result
      the Purchase Shares will be subject to a new hold period (as contemplated
      under Rule 144 promulgated under the 1933 Act) which commences on the date
      of the completion of the transactions contemplated by this
    Agreement.

4.           
Representations and Warranties

4.1 The Vendor represents and warrants to the Purchaser (which
representations and warranties shall survive the closing of the transactions
contemplated in this Agreement), with the intent that the Purchaser will rely
thereon in entering into this Agreement and in concluding the purchase and sale
of the Purchase Shares as contemplated herein, that:

	 	(a) 	
      the Vendor is the legal and beneficial owner of, and has
      marketable title to, the Purchase Shares free and clear of all liens,
      charges and encumbrances of any kind whatsoever;

	 	 	 
	 	(b) 	
      the Vendor has the power and capacity and good and
      sufficient right and authority to enter into this Agreement on the terms
      and conditions set forth in this Agreement and to transfer the legal and
      beneficial title and ownership of the Purchase Shares to the
    Purchaser;

4.2 The Purchaser represents and warrants to the Vendor (which
representations and warranties shall survive the closing of the transactions
contemplated in this Agreement), with the intent that the Vendor will rely
thereon in entering into this Agreement and in concluding the purchase and sale
of the Purchase Shares as contemplated herein, that:

	 	(a) 	
      the Purchaser has the power and capacity and good and
      sufficient right and authority to enter into this Agreement on the terms
      and conditions set forth in this Agreement;

- 3 -

	 	(b) 	
      this Agreement and all other documents required to be
      executed and delivered by the Purchaser have been duly, or will when
      executed and delivered be duly, executed and delivered by the Purchaser,
      and constitute the legal, valid and binding obligations of the Purchaser,
      enforceable against the Purchaser in accordance with their terms, subject
      to laws of general application relating to bankruptcy, insolvency, the
      relief of debtors, specific performance, injunctive relief and other
      equitable remedies;

	 	 	 
	 	(c) 	
      the Purchaser has not taken any action which would impose
      any obligation or liability to any person for finder’s fees, agent’s
      commissions or like payments in connection with the execution and delivery
      of this Agreement or the consummation of the transactions contemplated
      hereby;

	 	 	 
	 	(d) 	
      by completing the Accredited Investor Questionnaire
      attached to this Purchase Agreement the Purchaser is representing and
      warranting that it is an accredited investor, as that term is defined in
      Rule 501 of Regulation D, promulgated by the SEC under the 1933
  Act;

	 	 	 
	 	(e) 	
      the sale of the Purchase Shares to the Purchaser as
      contemplated in this Agreement complies with or is exempt from the
      applicable securities legislation of the jurisdiction of residence of the
      Purchaser;

	 	 	 
	 	(f) 	
      the Purchaser understands and agrees that none of the
      Purchase Shares have been registered under the 1933 Act, or under any
      state securities or “blue sky” laws of any state of the United States,
      and, unless so registered, may not be offered or sold in the United States
      or to U.S. Persons, as that term is defined in Regulation S under the 1933
      Act, except pursuant to an exemption from, or in a transaction not subject
      to, the registration requirements of the 1933 Act;

	 	 	 
	 	(g) 	
      the Purchaser is acquiring the Purchase Shares as
      principal for its own account, for investment purposes only, and not with
      a view to, or for, resale, distribution or fractionalization thereof, in
      whole or in part, and no other person has a direct or indirect beneficial
      interest in such Purchase Shares;

	 	 	 
	 	(h) 	
      the Purchaser (i) has adequate net worth and means of
      providing for its current financial needs and possible personal
      contingencies, (ii) has no need for liquidity in this investment, and
      (iii) is able to bear the economic risks of an investment in the Purchase
      Shares for an indefinite period of time;

	 	 	 
	 	(i) 	
      the Purchaser understands and agrees that the Purchase
      Shares are being offered only in a transaction not involving any public
      offering within the meaning of the 1933 Act; and

	 	 	 
	 	(j) 	
      the Purchaser is not acquiring the Purchase Shares as a
      result of any form of general solicitation or general advertising
      including advertisements, articles, notices or other communications
      published in any newspaper, magazine or similar media or broadcast over
      radio, or television, or any seminar or meeting whose attendees have been
      invited by general solicitation or general
advertising.

5.           
Legending and Registration of Subject Shares

5.1 The Purchaser hereby acknowledges that a legend will be
placed on the certificates representing the Purchase Shares to the effect that
the Purchase Shares represented by such certificates are subject to a hold
period and may not be traded until the expiry of such hold period except as
permitted by applicable securities legislation.

5.2 The Purchaser hereby acknowledges and agrees to the Company
making a notation on its records or giving instructions to the registrar and
transfer agent of the Company in order to implement the restrictions on transfer
set forth and described in this Agreement.

- 4 -

6.           
Termination

6.1 This Agreement may be terminated at any time prior to the
Closing (a) by the mutual consent of the Purchaser and the Vendor, or (b) by any
party hereto if the Closing has not occurred on or before July 1, 2010.

6.2 In the event of the termination of this Agreement, this
Agreement shall terminate and the parties shall have no liabilities or
obligations to each other hereunder; provided that nothing contained herein
shall relieve any party of liability for fraud or willful breach of this
Agreement.

7.           
Indemnity

7.1 Each party agrees to indemnify the other and their
respective directors, officers, employees and agents (the “Indemnitees”)
against, and to hold the Indemnitees harmless from, any and all losses, claims,
damages, liabilities and expenses (including without limitation reasonable
attorney fees and disbursements and other expenses incurred in connection with
investigating, preparing or defending any action, claim or proceeding, pending
or threatened and the costs of enforcement thereof) to which such Indemnitees
(or any of them) may become subject as a result of (a) any breach of any
representation, warranty, covenant or agreement made by or to be performed on
the part of either party under this Agreement.

8.           
Further Assurances

8.1 The parties to this Agreement hereby agree to execute and
deliver all such further documents and instruments and do all acts and things as
may be necessary or convenient to carry out the full intent and meaning of and
to effect the transactions contemplated by this Agreement.

9.           
Governing Law

9.1 This Agreement shall be governed by and construed in
accordance with the laws of the Province of Alberta.

EACH OF THE PARTIES HERETO WAIVES ANY RIGHT TO REQUEST A
TRIAL BY JURY IN ANY LITIGATION WITH RESPECT TO THIS AGREEMENT AND REPRESENTS
THAT COUNSEL HAS BEEN CONSULTED SPECIFICALLY AS TO THIS WAIVER.

10.           
Survival

10.1 This Agreement, including without limitation the
representations and warranties contained herein, shall survive and continue in
full force and effect and be binding upon the parties hereto notwithstanding the
completion of the purchase of the Purchase Shares as contemplated herein for a
period of three years from the date of closing of the transactions contemplated
herein.

11.           
Assignment

11.1 This Agreement is not transferable or assignable.

12.           
Electronic Means

12.1 Delivery of an executed copy of this Agreement by
electronic facsimile transmission or other means of electronic communication
capable of producing a printed copy will be deemed to be execution and delivery
of this Agreement as of the date set forth on page one of this Agreement.

13.           
Severability

13.1 The invalidity or unenforceability of any particular
provision of this Agreement shall not affect or limit the validity or
enforceability of the remaining provisions of this Agreement.

- 5 -

14.           
Entire Agreement

14.1 Except as expressly provided in this Agreement and in the
agreements, instruments and other documents contemplated or provided for herein,
this Agreement contains the entire agreement between the parties with respect to
the sale of the Purchase Shares and there are no other terms, conditions,
representations or warranties, whether expressed, implied, oral or written, by
statute or common law.

15.           
Notices

15.1 Any notice required or permitted to be given under this
Agreement will be validly given if in writing and delivered, sent by electronic
facsimile transmission or other means of electronic communication capable of
producing a printed copy or sent by prepaid registered mail, addressed to the
applicable party at its address indicated on the first page of this Agreement or
to such other address as any party may specify by notice in writing to the
other. Any notice delivered on a business day will be deemed conclusively to
have been effectively given on the date notice was delivered and any notice
given by electronic communication will be deemed conclusively to have been given
on the date of such transmission. Any notice sent by prepaid registered mail
will be deemed conclusively to have been effectively given on the third business
day after posting, but if at the time of posting or between the time of posting
and the fifth business day thereafter there is a strike, lockout or other labour
disturbance affecting postal service, then the notice will not be effectively
given until actually delivered.

16.           
Counterparts

16.1 This Agreement may be executed in any number of
counterparts, each of which, when so executed and delivered, shall constitute an
original and all of which together shall constitute one instrument.

17.           
Currency

17.1 Unless otherwise provided, all dollar amounts referred to
in this Agreement are in lawful money of the United States.

18.           
Independent Legal Advice

18.1 Both parties acknowledge that:

	 	(a) 	
      this Agreement was prepared by Clark Wilson LLP for the
      Vendor;

	 	 	 
	 	(b) 	
      Clark Wilson LLP received instructions from the Vendor
      and does not represent the Purchaser;

	 	 	 
	 	(c) 	
      the Purchaser has been advised to obtain his own
      independent legal advice on this Agreement prior to signing this
      Agreement;

	 	 	 
	 	(d) 	
      the Purchaser has been given adequate time to obtain
      independent legal advice;

	 	 	 
	 	(e) 	
      by signing this Agreement, the Purchaser confirms that he
      fully understands this Agreement; and

	 	 	 
	 	(f) 	
      by signing this Agreement without first obtaining
      independent legal advice, the Purchaser waives his right to obtain
      independent legal advice.

- 6 -

19.           
Time of the Essence

19.1 Time is of the essence of this Agreement.

IN WITNESS WHEREOF the parties hereto have duly executed
this Agreement as of the 2nd day of July, 2010.

OPEX ENERGY CORP.

By: /s/ Joseph Carusone

Joseph Carusone, President

MEDCON PHARMA (HONG KONG) LIMITED

By: /s/ Nicholas W. Burton

Nicholas W. Burton, Director (Please print the name and title
of the signatory)Rockwell Diamonds Inc.: Exhibit 4.14 - Filed by newsfilecorp.com

REPORT OF INDEPENDENT REGISTERED 
PUBLIC ACCOUNTING
FIRM

To the Shareholders of 
Rockwell Diamonds Inc.

We have audited the accompanying consolidated balance sheets of
Rockwell Diamonds Inc. (the “Company”) as at February 29, 2008 and May 31, 2007
and the consolidated statements of operations and comprehensive loss,
shareholders’ equity and cash flows for the nine month period ended February 29,
2008 and the years ended May 31, 2007 and 2006. These consolidated financial
statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.

We conducted our audits in accordance with the standards of the
Public Company Accounting Oversight Board (United States). Those standards
require that we plan and perform an audit to obtain reasonable assurance about
whether the financial statements are free of material misstatement. An audit
includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements. An audit also includes assessing the
accounting principles used and significant estimates made by management, as well
as evaluating the overall financial statement presentation. We believe that our
audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred
to above present fairly, in all material respects, the financial position of the
Company as at February 29, 2008 and May 31, 2007 and the results of its
operations and its cash flows for the nine month period ended February 29, 2008
and the years ended May 31, 2007 and 2006 in accordance with Canadian generally
accepted accounting principles.

As described in Note 16 to the consolidated financial
statements, the Company adopted Financial Accounting Standards Board
Interpretation No. 48 “Accounting for Uncertainly in Income Taxes – an
interpretation of FASB Statement No. 109”, on June 1, 2007.

We have also audited, in accordance with the standards of the
Public Company Accounting Oversight Board (United States), the effectiveness of
the Company’s internal control over financial reporting as of February 29, 2008,
based on criteria established in Internal Control – Integrated Framework
issued by the Committee of Sponsoring Organizations of the Treadway
Commission (COSO), and our report dated May 20, 2008 expressed an unqualified
opinion on the Company’s effectiveness of internal control over financial
reporting.

	                                                                                                                                                                                       	“DAVIDSON &
      COMPANY LLP” 
	 	 
	Vancouver, Canada 	Chartered Accountants 
	 	 
	May 20, 2008 	  

 

REPORT OF INDEPENDENT REGISTERED 

  PUBLIC ACCOUNTING
  FIRM

To the Shareholders of

Rockwell Diamonds Inc.

We have audited Rockwell Diamonds Inc.’s (the “Company”)
  internal control over financial reporting as of February 29, 2008, based on
  criteria established in Internal Control – Integrated Framework issued by
  the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The
  Company’s management is responsible for maintaining effective internal control
  over financial reporting and for its assessment of the effectiveness of internal
  control over financial reporting. Our responsibility is to express an opinion on
  the Company’s internal control over financial reporting based on our audit. 

We conducted our audit in accordance with the standards of the
  Public Company Accounting Oversight Board (United States). Those standards
  require that we plan and perform the audit to obtain reasonable assurance about
  whether effective internal control over financial reporting was maintained in
  all material respects. Our audit of internal control over financial reporting
  included obtaining an understanding of internal control over financial
  reporting, assessing the risk that a material weakness exists, and testing and
  evaluating the design and operating effectiveness of internal control based on
  the assessed risk. Our audit also included performing such other procedures as
  we considered necessary in the circumstances. We believe that our audit provides
  a reasonable basis for our opinion. 

A company’s internal control over financial reporting is a
  process designed to provide reasonable assurance regarding the reliability of
  financial reporting and the preparation of financial statements for external
  purposes in accordance with generally accepted accounting principles. A
  company’s internal control over financial reporting includes those policies and
  procedures that (1) pertain to the maintenance of records that, in reasonable
  detail, accurately and fairly reflect the transactions and dispositions of the
  assets of the company; (2) provide reasonable assurance that transactions are
  recorded as necessary to permit preparation of financial statements in
  accordance with generally accepted accounting principles, and that receipts and
  expenditures of the company are being made only in accordance with
  authorizations of management and directors of the company; and (3) provide
  reasonable assurance regarding prevention or timely detection of unauthorized
  acquisition, use, or disposition of the company’s assets that could have a
  material effect on the financial statements. 

Because of its inherent limitations, internal control over
  financial reporting may not prevent or detect misstatements. Also, projections
  of any evaluation of effectiveness to future periods are subject to the risk
  that controls may become inadequate because of changes in conditions, or that
  the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the Company maintained, in all material
  respects, effective internal control over financial reporting as of February 29,
  2008, based on the criteria established in Internal Control – Integrated
    Framework issued by the Committee of Sponsoring Organizations of the
  Treadway Commission (COSO).

We have also audited, in accordance with the standards of the
  Public Company Accounting Oversight Board (United States), the consolidated
  balance sheets of the Company as of February 29, 2008 and May 31, 2007 and the
  consolidated statements of operations and comprehensive loss, shareholders’
  equity and cash flows for the nine month period ended February 29, 2008 and the
  years ended May 31, 2007 and 2006 and our report dated May 20, 2008 expressed an
  unqualified opinion on those consolidated financial statements. 

	                                                                                                                                                                                       	“DAVIDSON &
      COMPANY LLP” 
	 	 
	Vancouver, Canada 	Chartered Accountants 
	 	 
	May 20, 2008

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