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    Interim Results (6 Months to 31 December 2011)

    February 2012

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    Important Notice

    These Presentation Materials do not constitute or form part of any invitation, offer for sale or subscription or any solicitation forany offer to buy or subscribe for any securities in the Company nor shall they or any part of them form the basis of or be reliedupon in any manner or for any purpose whatsoever.

    These Presentation Materials must not be used or relied upon for the purpose of making any investment decision or engaging inan investment activity and any decision in connection with a purchase of shares in the Company must be made solely on thebasis of the publicly available information. Accordingly, neither the Company nor its directors makes any representation orwarranty in respect of the contents of the Presentation Materials.

    The information contained in the Presentation Materials is subject to amendment, revision and updating in any way without noticeor liability to any party. The presentation materials contain forward-looking statements which involve risk and uncertainties andactual results and developments may differ materially from those expressed or implied by these statements depending on avariety of factors. No representation or warranty, express or implied, is made as to the fairness, accuracy or completeness of theinformation or opinions contained herein, which have not been independently verified.

    The delivery of these Presentation Materials shall not at any time or in any circumstance create any implication that there hasbeen no adverse change, or any event reasonably likely to involve any adverse change, in the condition (financial or otherwise) ofthe Company since the date of these Presentation Materials.

    The Presentation Materials are confidential and being supplied to you for your own information and may not be reproduced,

    further distributed, passed on, or the contents otherwise divulged, directly or indirectly, to any other person (except the recipientsprofessional advisers) or published, in whole or in part, for any purpose whatsoever. The Presentation Materials may not be usedfor the purpose of an offer or solicitation to subscribe for securities by anyone in any jurisdiction.

    2

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    Overview

    3

    Main Factors Affecting H1 Positive Outlook for H2

    A weaker diamond market rough diamond pricesfell from July highs, causing revenue to be~US$23.0m lower (as previously stated in MainMarket step-up prospectus)

    Diamond market stabilised end November Prices were slightly stronger at Petras 1st tender in

    2012, with US$44m generated on sales of~300,000 carats

    Lower sales due to xmas holiday period and lock-up of initial Finsch production

    Production and sales expected to be substantiallyhigher in H2 further to:

    release of inventory full 6 months Finsch production and

    increased production across the Group

    Exceptional financial items: weaker Rand (R8.13 vs R6.84) resulted in

    US$35.7m unrealised forex loss in H1 once-off transaction costs of US$2.7m

    JulJun Dec FebNovSepAug MarJan Apr MayOct Jun

    H1 H2

    Petra Typical Tender Sales Cycle

    1 2 3 4 5 6 7 8

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    Summary Results

    4

    6 months to 31December 2011

    (US$m)

    6 months to 31December 2010

    (US$m)

    Year ended 30June 2011

    (US$m)

    Revenue 101.4 90.0 220.6

    Mining and processing costs (72.1) (66.8) (146.9)

    Other direct income 1.4 1.3 2.7

    Profit from mining activity* 30.7 24.5 76.4

    Exploration expense (0.8) (0.4) (1.3)

    Corporate overhead (4.9) (3.9) (8.0)

    Adjusted EBITDA* 25.0 20.2 67.1

    Transaction costs (2.7) - -

    Net impairment charges and reversals - - 6.5

    Depreciation (18.7) (10.1) (22.4)

    Share based payment expense (0.6) (1.0) (1.9)

    Net unrealised foreign exchange (loss) / gain (35.7) 20.9 18.6

    Net finance income / (expense)* 0.9 (3.2) (3.5)

    Tax credit / (expense) / credit 5.1 (2.3) (5.2)

    Net (loss) / profit after tax Group* (26.7) 24.5 59.2

    Basic (loss) / profit per share attributable to the equity holders of the Company US$cents*

    (5.23) 6.79 12.83

    Adjusted basic earnings per share attributable to equity holders of the Company beforeunrealised forex movements & once off transaction costs US$ cents*

    2.46 0.86 8.41

    * Refer to announcement dated 28 February 2012 for detailed notes

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    Highlights

    Operations:

    Production up 64% to 953,553 carats (H1 FY 2011: 582,102 carats)

    Cash operating unit costs well controlled despite inflationary pressures

    Capex of US$56.7 million (H1 FY 2011 US$47.7 million)

    Corporate:

    Successful step-up from AIM to the Main Market of the London Stock Exchange

    Petra to increase its interests in its various SA operations by acquiring 49.24% effective

    interest in main BEE partner Sedibeng Mining

    Appointment of Dr Patrick Bartlett and Gordon Hamilton as independent NEDs

    Completion of Finsch acquisition for R1.425 billion (ca. US$192 million)

    US$48 million debt facilities put in place with Rand Merchant Bank (RMB)

    Health & Safety

    Group lost time injury frequency rate (LTIFR) of 0.91 (H1 FY 2011: 0.64)

    Regrettably a fatality occurred at Kimberley Underground on 22 January 2012

    Petra striving for zero harm across all its operations

    5

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    Operating Cashflow

    6

    H1

    FY 2012(US$m)

    H1

    FY 2011(US$m)

    FY 2011(US$m)

    (Loss) / profit before tax (31.8) 26.8 64.4

    Adjusted for non cashflow items 53.5 (5.9) 3.6

    Cash generated before working capital changes 21.7 20.9 68.0

    Increase in net working capital (23.0) (8.1) (15.8)Cash (utilised in) / generated from operations (1.3) 12.8 52.2

    Finance expense and taxation (2.3) (0.9) (1.6)

    Net cash (utilised in) / generated from operating activities (3.6) 11.9 50.6

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    Balance Sheet Snapshot

    31 Dec 2011(US$m)

    31 Dec 2010(US$m)

    Cash and cash equivalents:Bank 45.1 20.8

    Diamond inventories 38.1 20.2

    Total 83.2 41.0

    Loans, borrowings and deferred consideration:

    IFC / RMB Debt Facilities (ca. US$83m in total)* (70.5) (54.1)

    RMB Debt Facility (ca. US$48m in total)** undrawn n/a

    Deferred Cullinan consideration (repayable on or before 31 March2012)***

    (6.0) (32.9)

    Other loans and borrowings - (3.0)

    BEE loans due to Petra 110.0 68.0

    Net loans due to Petra / (net debt) 33.5 (22.0)

    7

    * IFC interest charged at US$ 6 month LIBOR + 4.5%; RMB interest charged at South African 3 month JIBAR +4.5%** Interest charged at South African 3 month JIBAR +2.5% for Revolving Credit Facility portion of US$36m and +2.4% for Working Capital Facility portion of US$12m

    *** Interest charged at 7% per annum post 31 Dec 2011

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    H1 FY 2012 Operations

    Operation Cullinan Finsch Koffiefontein KimberleyUnderground

    Fissures Williamson

    H1 FY2012

    H1 FY2011

    H1 FY2012

    H1 FY2011

    H1 FY2012

    H1 FY2011

    H1 FY2012

    H1 FY2011

    H1 FY2012

    H1 FY2011

    H1 FY2012

    H1 FY2011

    Total Production

    Tonnes treated (Mt) 1,595,461 1,450,150 1,432,805 n/a 759,590 802,446 287,187 176,527 92,031 121,366 59,774 254,648

    Diamonds recovered(carats)

    444,040 468,056 414,563 n/a 21,538 34,500 34,751 24,988 36,074 43,710 2,587 10,847

    Sales

    Revenue (US$M) 48.6 57.8 28.3 n/a 6.5 17.2 8.1 4.9 8.4 7.9 1.5 2.0

    Diamonds sold (carats) 379,894 481,049 219,408 n/a 15,196 36,669 26,395 17,271 32,835 41,522 5,044 7,722

    Average price per carat(US$)

    128 120 129 n/a 426 470 308 285 255 192 298 264

    Costs

    On-mine cash cost pertonne treated (ZAR)

    173 162 138 n/a 118 103 208 223 1,013 619 n/a n/a

    Capex

    Capex (US$M) 21.1 12.9 1.4 n/a 4.8 4.2 2.5 2.1 1.6 4.6 17.5 16.4

    8

    SA Costs generally well controlled despite inflationary pressures core focus for Petra

    Costs at Finsch in line with initial expectations

    Fissures adversely affected by low production volumes

    Cost break-down for Williamson n/a as costs capitalised during the plant rebuild project

    Group Capex of US$56.7m reflects acceleration of development programmes; incls. US$8.4m incurred at Group projects division

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    Production & Revenue H1 2011 vs H1 2012

    Diamonds Sold

    H1 2011: 584,234 carats

    Gross Revenue

    H1 2011: US$90 million

    83%

    6%

    7%3%

    1%

    H1 2012: 678,772 carats H1 2012: US$101.4 millionFissure Mines

    KimberleyUnderground

    Koffiefontein

    Williamson

    Cullinan

    Finsch

    9

    64%

    19%

    9%6%

    2%

    56%

    2%

    32%

    5%

    1%

    4%

    49%

    6%

    28%

    8%

    1%

    8%

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    Diamond Market Fundamentals

    10

    Source: Deutsche Bank / Alrosa, April 2011Source: RBC Capital Markets, February 2012

    Many of the worlds major diamond mines are in decline and cannot maintain previous output

    No new important discoveries since the finds in Canada in the early 1990s

    Petras strategy is to focus on extending lives of existing major kimberlite mines

    Strong demand drivers going forward, particularly from emerging markets

    Tiffany & Co and Swatch both reported to be investigating means to secure supply

    Significant supply/demand deficit forecast to emergeProduction forecast to remain relatively flat

    5

    7

    9

    11

    13

    15

    17

    19

    21

    2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018

    US$bn

    Supply in 2008 Prices Demand

    0

    20

    40

    60

    80

    100

    120

    140

    160

    180

    200

    2006A

    2007A

    2008A

    2009A

    2010A

    2011E

    2012E

    2013E

    2014E

    2015E

    2016E

    2017E

    2018E

    2019E

    Ctmm

    Global Rough Diamond Production

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    Late Cycle Play

    And ever increasing corporateactivity.

    Anglo American to buyOppenheimers stake in DeBeers; presentation notes highlyattractive industry fundamentalswith late cycle exposure

    Alrosa - no firm decision taken

    but considering an IPO in 2012-2014

    Chow Tai Fook leadingChinese diamond retailer raisedUS$2 billion in Hong Kong IPOplans to increase stores in Asiafrom 1,300 to 2,000 by 2016

    Graff Diamonds preparing toraise up to US$1 billion in HongKong IPO to expand in Asia(Financial Times 17 Feb 2012)

    11

    Per capita consumption of key commodities: China relative to the US steady state

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    Diamond Market Performance 2011

    De Beers estimates global diamond jewellery marketgrew by +11% 13%

    Major US market grew by ~8%

    China (+~30%) and India (+10% 15%) continuedexceptional growth

    Far East (China, Hong Kong, Taiwan, India and the Gulf)expected to account for +40% of global demand by 2016

    12

    Source: De Beers Group Strategy

    Production (mm carats) 2008 2009 2010 2011

    De Beers 48.1 24.6 33.0 31.3

    Alrosa 36.9 32.8 34.3 34.5E

    Rio Tinto 20.8 14.0 13.8 11.7

    BHP Billiton 3.3 3.2 3.1 2.5

    Kimberley ProcessStatisticsGlobal Production

    163.9 120.2 128.3 tbc

    Global Demand Growth

    Majors Production Flat or Declining

    Consumer Demand Forecasts 2011 & 2016 (US$ PWP)

    India 10%

    Hong Kong 2%

    Gulf 7%

    Turkey 2%

    RoW 18%

    Taiw an 2%

    China 11%

    Japan 10%

    USA 38%

    India 15%

    Hong Kong 2%

    Gulf 6%

    Turkey 2%

    RoW 15%

    Taiwan 2%

    China 16%

    Japan 8%

    USA 34%

    2011

    2016

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    Rough Diamond Prices

    Global economic uncertainty caused prices to fall fromJune 2011 highs

    Rand weakness partially offset lower pricing during thePeriod (South African production)

    Market stabilised in late H1; Petra expects trend tocontinue but some volatility could be experienced

    First tender in H2 achieved US$44.4 million on sale of306,149 carats

    13

    Petra Average Rough Diamond Prices*

    Mine

    H1 FY 2012

    Actual

    (US$)

    Original

    guidance FY2012

    (US$)

    FY 2011

    Actual

    (US$)

    FY 2010

    Actual

    (US$)

    Cullinan 128 163 148

    141

    (101 excl.CullinanHeritage)

    Finsch 129 155 n/a n/a

    Koffiefontein 426 549 564 402

    KimberleyUnderground

    308 325 333 n/a

    Fissures 255 271 244 185

    Williamson 298(alluvials)

    230

    (ROMmedium term)

    302 157

    * Prices given are the average of ROM and tailings as Petra tenders mineproduction on a mixed parcel basis

    RBC Capital Markets Rough Diamond Price Index

    50

    70

    90

    110

    130

    150

    170

    190

    210

    01/06/2001

    01/06/2002

    01/06/2003

    01/06/2004

    01/06/2005

    01/06/2006

    01/06/2007

    01/06/2008

    01/06/2009

    01/06/2010

    01/09/2010

    01/12/2010

    01/06/2011

    01/10/2011

    01/12/2011

    01/01/2012

    June2001=100

    Rough Price Index Jan 2012

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    Cullinan Development Programme Update

    14

    Cullinan Mining Schematic

    BA5

    Rock Shaft

    Men & MaterialShaft

    Current Shaft Bottom580 Level

    630m Level

    AUC South andBAW Phase 1

    BB1E

    830m Level

    1073m base of Resource(open ended at depth)

    930m Shaft Bottom

    Current Infrastructure

    Planned Infrastructure

    C-CUTPhase 1

    2000metres

    Current extent of South Decline

    16Ha @

    830 Leve

    Loading Level

    880m

    Shaft Bottom

    Current

    ShaftBottom

    805 Level

    732m Leve

    Expansion Plan to deliver2.0 Mctpa ROM & 0.4 Mctpatailings by FY 2019

    South Decline to establishproduction at 830m and thenon to bottom of new shaft at930mend FY 2012

    Approval of additional NorthDecline to create furtheraccess to 830m productionlevel - commencingH2FY2012

    Contract for shaft deepening& related infrastructureawarded

    Shaft deepening from 580mto 930m to replace thecurrent conveyor belt ore-handling systemmid FY2015

    Production from new caveFY 2015

    Upgrading and streamliningof plant facilities in order totreat 4Mt underground & 4MttailingsfromFY 2015, 4year ongoing programme

    Proposed North Decline

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    VentShaft

    ProductionShaft

    630m Level

    670m Level

    770m Level

    Shaft Bottom825m

    880mBlock Cave

    950mDecline to 880m

    SLC Conveyor

    Ore Handling

    Sub level Cave

    Block 4 Pillars

    Block 4Remaining

    Block 5

    Not incurrent

    mine plan

    PrecursorSLC

    Finsch Development Programme Update

    15

    Kimberlite Footprint @880m Level:Main pipe: 3.7haPrecursors: 1.5ha

    Finsch Mining Schematic

    Current Infrastructure

    Planned Infrastructure

    Expansion Plan to deliverproduction of 1.6 Mctpa ROM& 0.3 Mctpa tailings by FY2018

    Mining currently taking placein Block 4 at 630mFY2012

    Treatment of Pre 1979Tailingsuntil FY 2015

    Development of Sub LevelCave across 2/3 orebody

    footprint at ~770mFY 2013

    Production from Block 5 at880mFY 2014onwards

    Deepening of shaft to 950mand ore-handlinginfrastructure on 880m Level

    End FY 2015

    Treatment of Post 1979TailingsFY 2015 to FY2020

    Ramp up ROM to 3.5 MptaFY 2018

    880m base of Resource

    (open ended at depth)

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    Production & Revenue FY 2011 & Estimated FY 2019

    Gross RevenueGross Production

    FY 2011: 1.1 million carats

    FY 2019: 5.4 million carats

    FY 2011: US$221 million

    FY 2019: ca.US$1.3 billion*

    * Calculated using a 4% real price increaseFY 2019 figures are management estimates16

    Cullinan 0.9

    Williamson 0.6

    Koffiefontein 0.05

    Kimberley 0.2

    Fissures 0.08

    Cullinan 2.4

    Fissures 0.1

    Williamson 0.03

    Koffiefontein 0.1

    Kimberley 0.06

    Finsch 1.9

    Cullinan 140.2Koffiefontein 30.8

    Fissures 21.8

    Williamson 9.5

    Kimberley 18.2

    Cullinan 489

    Williamson 179Koffiefontein 85

    Kimberley 70

    Fissure 52

    Finsch 419

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    Outlook

    17

    Operations

    H2 production expected to be significantly higher than H1, mainly due to inclusion of Finsch production for full6 month period

    All expansion programmes on target to deliver +2 Mctpa in FY 2012 & +5 Mctpa by FY 2019

    Focus remains on:

    cost control and increased production in H2 will assist in improving unit costs

    execution of capital expansion programmes

    Sales Sales to be substantially higher in H2 set against same fixed cost structure

    Corporate

    Main Market listing & FTSE 250 inclusion will see increased profile & IR activity

    Objective to further broaden Petras shareholder base & commencement of marketing in Asia

    Market

    Some short-term volatility due to current global uncertainty but long-term fundamentals remain firmly in place

    Petras strong production growth will maximise leverage to anticipated supply deficit

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    Expected FTSE Index Ranking (as at 23 Feb 2012)

    Index review scheduled for 7 March; changes to Index implemented Monday 19 March 2012

    18

    FTSE All Share FTSE 350 Mining Index

    Size Rank Name Mkt Cap (mm)

    1 BHP Billiton 123,693

    2 Rio Tinto 72,307

    3 Xstrata 36,021

    4 Anglo American 35,771

    5 Glencore International 30,363

    6 Fresnillo 13,310

    7 Antofagasta 13,2708 ENRC 9,433

    9 Randgold Resources 6,866

    10 Kazakhmys 6,126

    15 Bumi 1,855

    16 Hochschild Mining 1,729

    17 Kenmare Resources 1,417

    18 Petropavlovsk 1,410

    19 New World Resources 1,385

    20 Centamin 1,035

    21 Petra Diamonds 781

    22 Aquarius Platinum 682

    23 Anglo Pacific Group 355

    24 Gem Diamonds 347

    25 Allied Gold 246

    Size Rank NameMkt Cap(mm)(1)

    231 Home Retail Group 846

    232 Chemring Group 839

    233 SVG Capital 823

    234 Bluecrest Allblue Fund 818

    235 Premier Farnell 811

    236 Berendsen 809

    237 Atkins 803

    238 HICL Infrastructure 795

    239 Senior 790

    240 Petra Diamonds 781

    241 Beazley 769

    242 Elementis 750

    243 Cable & Wireless 748

    244 Bodycote 746

    245 Yule Catto & Co 743

    246 Howden Joinery 742

    247 Genus 740

    248 Micro Focus International 736

    249 Domino Printing Sciences 736

    Sources: ProQuote and Bloomberg

    (1) In line with FTSE calculations, and to provide an accurate ranking, market caps in the FTSE All Share table are based only on LSE traded shares

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    Thank You

    Finsch mine, South Africa

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    Discover Petra Diamonds

    Londons largest quoted pure diamond mining group LSE: PDL

    Provides direct exposure to the positive long term fundamentals of the diamond market

    December 2011 stepped up from AIM to the Main Market of the London Stock Exchange

    March 2012 expected to enter the FTSE 250 Index

    Exceptional growth objective to increase production to over 5 million carats by FY 2019

    FY 2007 FY 2011

    Gross Resources 9 million carats 300 million carats

    Production ~180,000 carats 1.1 million carats

    Gross Revenue US$17.0 million US$220.6 million

    On Mine EBITDA US$1.3 million US$76.4 million

    20

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    Capital Structure

    21

    High Quality Shareholder Base 24 Feb 2012

    Al Rajhi Holdings W.W.L. 13.3%

    Saad Investments Company Ltd/AWAL Bank 12.1%

    JP Morgan Asset Management Holdings Inc. 7.9%

    Capital Group International, Inc. 7.3%

    Scottish Widows Investment Partnership 5.0%

    T. Rowe Price 5.0%

    BlackRock Investment (UK) Limited 4.2%

    M&G Investments 3.6%

    Kames Capital 3.3%

    Ignis Investment Services Limited 3.0%

    Directors 2.8%

    Listing LSE: PDL

    Average daily trading volume(shares) YTD

    0.75m

    Shares in issue 501m

    Free float 72.0%

    Market cap @ 152p (24 Feb2012)

    762m

    Share Price Chart (1 year)

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    An Exceptional Growth Path

    22

    Cullinan

    July 2008

    74% Petra26% BEE Partners

    Block Cave

    16yr Mine Plan+50yr Potential Life

    Williamson

    November 2008

    75% Petra25% Government of

    Tanzania

    Open Pit

    17yr Mine Plan+50yr Potential Life

    Kimberley UG

    May 2010

    74% Petra26% BEE Partners

    Block Cave

    11yr Mine Plan+12yr Potential Life

    Finsch

    74% Petra26% BEE Partners

    Block Cave

    18yr Mine Plan+25yr Potential Life

    Koffiefontein

    July 2007

    74% Petra26% BEE Partners

    Front Cave

    14yr Mine Plan+20yr Potential Life

    September 2011

    Successful track record:

    Focus on efficiencies: right-size operation, restructure cost base & empower management

    Industry leading team utilises in-house capabilities to execute capex programmes

    Focus on value as opposed to volume production; optimise plant processing & security to

    ensure recovery of full spectrum of diamonds

    Achieve best rough diamond prices through open tender system

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    Aim Of Expansion Programmes Undiluted Ore

    23

    Virgin kimberlite ore

    Production level

    Undercutlevel

    Drawpoints

    Loaders

    Haulage

    Undilutedore

    Schematic - block cave mining method

    Current mining at undergroundpipe mines taking place indiluted mature caves and lowgrade remnants

    Expansion programmes will

    open up fresh block caves,delivering undiluted ore inhigher grade areas

    Substantial higher revenue pertonne leading to increasedmargins

    Willi Mi i O i

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    Williamson Mining Overview

    24

    Granite Breccia

    RVK

    BoumaShale Island

    BVK

    PK

    Geology

    205m

    LOM Pit Shell

    Schematic showing cut-away geologyand planned open pit

    N1km

    Williamson Kimberlite Pipe SchematicExpansion Plan KeyComponents

    Stockpile (due to pit shaping

    activities) of ca. 900,000 t(>50,000 cts)

    Enhanced rebuild of existingplant (3 Mtpa) completedexpected to be fullyoperational April 2012

    Standby power now available

    at site due to recent powerissuesQ3 FY 2012

    Longer term expansion planto enable a 10 Mtpa operationand construction of new mainplant currently dependentupon confirmation of secureelectricity supply fromTanesco, normalisation of

    rainfall and treatment resultsfollowing 6 to 9 monthproduction period usingrebuilt 3 Mtpa plantNewtiming tbc

    K ffi f t i Mi i O i

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    Koffiefontein Mining Overview

    25

    Koffiefontein Kimberlite Pipe SchematicExpansion Plan KeyComponents

    Installing new sub-levelcave at 560m to 600mLevelFY 2013

    Installing new blockcave at 690m LevelFY 2016

    Tailings programmenow ramped up withPetra processing +0.5Mtpa

    Ki b l U d d Mi i O i

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    Kimberley Underground Mining Overview

    26

    4.5 ha @

    870m Level

    0.5 ha @

    845m Level

    3.5 ha @

    995m Level

    Kimberley Underground Kimberlite Pipes SchematicExpansion Plan KeyComponents

    Temporary mobile pan plantput in place at Wesselton

    Q2 FY 2012

    Introduction of scrubberand apron feeder to JointShaft plant expected toaddress bottleneckQ3FY 2012

    Construction and

    commissioning of mainplant (40,000 tpm) atWesseltonQ4 FY 2012

    Underground developmentFY2012 onwards

    Sampling programmeunderway to extend minelifeFY 2012 onwards

    C P fil

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    Capex Profile (as published Sep 2011; an updated profile will be published later this year)

    27

    Financial Year 2012 2013 2014 2015 2016 2017 2018 2019

    Operation Area

    Finsch Existing Block 4 (630 meter Level)

    - Block 4 pillars

    - SLC Block 4 precursor

    - SLC 770 meter Level

    - Block 5 880 meter Level Development tonnes

    ROM Tonnes (Mt) 2.2 3.2 3.2 3.2 3.5 3.5 3.5 3.5

    Tailings Tonnes (Mt) 1.6 2.8 3.5 3.5 3.5 3.0 3.0 3.0

    Expansion Capex (US$m) 34.2 107.8 110.4 65.4 29.9 - - -

    Stay-in-business Capex (US$m) 4.7 6.6 6.9 6.9 7.1 6.8 6.8 6.9

    Cullinan ROM Tonnes (Mt) 2.4 2.4 2.4 2.6 2.6 2.8 3.2 4.0

    Tailings Tonnes (Mt) 1.0 3.0 4.0 4.0 4.0 4.0 4.0 4.0

    Expansion Capex (US$m) 60.9 78.5 74.8 52.6 20.7 19.0 19.0 19.0

    Stay-in-business Capex (US$m) 4.2 8.6 6.9 7.0 6.1 6.1 6.1 6.3

    Williamson ROM Tonnes (Mt) 0.9 5.1 10.0 10.0 10.0 10.0 10.0 10.0Expansion Capex (US$m) 45.9 35.3 - - - - - -

    Stay-in-business Capex (US$m) 4.3 6.2 6.5 6.2 5.9 5.6 5.3 5.0

    Koffiefontein ROM Tonnes (Mt) 0.6 0.8 1.0 1.1 1.2 1.2 1.2 1.2

    Tailings Tonnes (Mt) 0.9 0.9 0.7 0.6 0.5 0.5 0.5 0.5

    Expansion Capex (US$m) 7.5 8.5 9.2 5.9 8.9 - - -

    Stay-in-business Capex (US$m) 4.0 4.2 4.3 2.8 2.6 2.5 2.5 2.4

    Kimberley U/G ROM Tonnes (Mt) 1.1 1.2 1.0 1.0 1.0 1.0 1.0 1.0

    Expansion Capex (US$m) 17.9 9.6 7.4 - - - - -

    Stay-in-business Capex (US$m) 3.0 2.9 2.4 2.4 2.3 2.3 2.2 1.7

    Fissures ROM Tonnes (Mt) 0.2 0.3 0.3 0.3 0.3 0.3 0.3 0.3

    Tailings Tonnes (Mt) - - - - - - - -

    Expansion Capex (US$m) - - - - - - - -

    Stay-in-business Capex (US$m) 2.1 2.1 2.1 2.0 1.9 1.9 1.9 1.8

    Petra Diamonds

    (Gross)ROM Tonnes (Mt) 7.4 12.9 17.9 18.2 18.6 18.8 19.2 20.0

    Expansion Capex (US$m) 166.5 239.7 201.7 123.9 59.5 19.0 19.0 19.0

    Stay-in-business Capex (US$m) 22.3 30.6 29.1 27.2 25.9 25.2 24.9 24.11. All monetary values stated in 2011 money terms; ZAR:USD rate used: R6.75

    Sustainability Our Commitment

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    Sustainability Our Commitment

    Cullinan Agricultural Hub

    Mwadui Primary School owned and

    operated by Williamson and provides

    free education to 460 learners

    The Williamson

    Nursery, with the

    capacity to raise

    500,000 seedlings

    annually

    Portable skills workshop

    at Koffiefontein Boiler

    making

    Conservation work at Cullinan

    including Rhino de-horning

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    Petra DiamondsCathy Malins

    [email protected]+44 20 7318 0452

    www.petradiamonds.com