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Investor Presentation European Road TripJanuary-February 2007

John BristowJames Allan

TSX Venture: RVIOTCBB: RVINF

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This presentation includes certain statements and other information that may be deemed "forward-looking". Other than statements of historical fact all statements in this presentation that address future production, reserve or resource potential, exploration drilling, exploitation activities and events or developments that the Company expects are forward-looking statements. Although the Company believes the expectations expressed in such forward- looking statements are based on reasonable assumptions, such statements are not guarantees of future performance and actual results or developments may differ materially from those in the forward-looking statements. Factors that could cause actual results to differ materially from those in forward-looking statements include market prices, exploitation and exploration successes, availability of capital and financing, and general economic, market or business conditions. Investors are cautioned that any such statements are not guarantees of future performance and that actual results or developments may differ materially from those projected in the forward-looking statements. For more information on Rockwell, Investors should review Rockwell’s annual Form 20-F filing with the United States Securities and Exchange Commission www.sec.com and the Company's home jurisdiction filings that are available at www.sedar.com.

Disclaimer

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• Established alluvial diamond miner

• Three existing mining operations in Kimberley district of South Africa

• Producer of world’s highest value gemstones (~US$1500 to $2000 per carat)

• Exceptional geological and operational skill set

• Acquisition opportunities capable of doubling production in short term

RVI – unique diamond opportunity …

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• John Bristow, PhD – geologist, ex De Beers, 25 years in alluvial diamond mining and kimberlite development.

• Hennie Van Wyk – 15 years experience in start-up, development and operation of the alluvial diamond projects.

• Jeremy Crozier, MBA – geologist, ex De Beers, African operational experience in kimberlites and alluvial diamonds.

• Jeffrey Brenner – rough diamond expert, international trader and manufacturer.

• Dave Copeland, P. Eng – principal of HDI and a geological engineer

• James Allan, BSc Eng, MBA- extensive diamond industry experience

Management Expertise

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Demand-Supply Projections

6,000

10,000

14,000

18,000

1994

1997

2000

2003

2006

2009

2012

2015Ro

ugh

dem

and

/ sup

ply (

US$m

) Rough DemandRough Supply

BHPB Projections 2003-2015:3.6% Demand0.8% Supply

Demand-Supply Projections(with current resources)

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Diamond Price Appreciation

Source: De Beers

0

Diamond Index (1948=100)Gold Index (1948=100)

1948

1952

1956

1960

1964

1968

1972

1976

1980

1984

1988

1992

1996

2000

2004

2008

2012

500

1000

1500

2000

2500

3000

3500

Diamond Index ForecastInd e

x

Year

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RVI

DPI Holding Company

Klipdam Diamond Mining(Klipdam operations, SA)

H C van Wyk Diamonds(“HCVWD”, Holpan and Wouterspan operations, SA)

100%

51%

51%

Galputs(SA diamond bearing deposits - trial mining)

100%

Midamines Concession(Cuango River, DRC Feasibility)

80%*

* A net profit interest subject to exploration program and feasibility study

Staged acquisitionto 74% ownership

with 26% BEE partner

Staged acquisitionto 74% ownership

with 26% BEE partner

First Acquisition Completed

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SpringbokSpringbok

KoaValleyKoaValley

Lower OrangeLower Orange

PrieskaPrieska

WouterspanWouterspan

DouglasDouglas

Middle OrangeMiddle Orange

KimberleyKimberleyBloemfonteinBloemfontein

Vaal RiverVaal RiverBloemhofBloemhof

JohannesburgJohannesburgVentersdorpVentersdorp

PretoriaPretoria

LimpopoLimpopo

BotswanaBotswana

NamibiaNamibia

ZimbabweZimbabwe

SwazilandSwaziland

LesothoLesotho

RSARSA

00 300300

KilometresKilometres

NN

Limpopo R

iver

Vaal River

Molopo

River

RietRiver

RietRiver

OrangeRiver

OrangeRiver

Holpan-KlipdamHolpan-Klipdam

GalputsGalputs

Southern AfricaAlluvial Diamond Deposits

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Size : Frequency Distribution - Middle Orange River

1

102030

50

90

98

99.990.01 0.1 1 10 100 200 300

0.01Percent carats larger than Z

Diamond Distribution of Saxendrift

Mining & exploration

Statistically inadequate to be used in the plot

Carats per stone

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156 caratsFlawless D US$5.7M

(US$37,000/carat)

39 caratsFlawless DUS$858,000

(US$22,000/carat)

152 caratsFlawless DUS$4.3M

(US$28,000/carat)

132 caratsIntense Yellow

US$1.6M (US$12,200/carat)

Recent Production From Operations

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• 90% of stones are above 1 carat

• >30% of stones are above 10 carats

• Approximately 3% of stones are above 100 carats

The area is known for recovery of large, exceptional quality stones average price >US$1500 per carat.

Prices firming in 2007-2008

(www.allanhochreiter.co.za)

Recent Production From Operations

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0 %5 %

1 0 %1 5 %2 0 %2 5 %3 0 %3 5 %4 0 %4 5 %5 0 %

+ 2 c ts + 1 1 + 9 + 7 -7

P ro d u c tio n b y v a lu e

0 %5 %

1 0 %1 5 %2 0 %2 5 %3 0 %3 5 %4 0 %

+ 2 c ts + 1 1 + 9 + 7 -7

P ro d u c tio n b y vo lu m e :

8 .4m c ts

3 4 .8m c ts

1 8 .0m c ts1 4 .4m c ts

4 4 .4m c ts

2carats + ; ~ 45% world diamond production by value

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• Processing via 200tph Bateman DMS plant

• Final recovery via hands-off X-ray flow sort

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• Conventional earth- moving operation

Site Operations

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• Emphasis on ‘hands-off’ recovery systems

• Regular review of procedures

• Ownership

Security – Key Focus

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Holpan & Klipdam Wouterspan

Diamondiferous gravel (million tonnes)* 24 60

Grade (carats per hundred tonnes) 0.53 0.3

Average diamond value (US$ per carat) 900 1250

Revenue per tonne (US$ per tonne) 4.75 3.75

Costs (US$ per tonne) 2.25 2.00

EBITDA Margin 52% 47%

Project Summary: Established Profitable Operations

* R.H. De Decker, Pr.Sci.Nat., is the Qualified Person responsible for the resource estimate.

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Black Economic Empowerment

• Paying their way

• African Vanguard Resources (“AVR”) may acquire up to 26% of H C van Wyk Diamonds

• Broad based BEE vehicle with existing interests in mining (Harmony and Aflease)

• Good knowledge of diamonds with additional projects identified

• Principals• Sandile Zungu (BSc Eng, MBA)• Darryll Castle (BSc Eng, MBA)

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Growth Strategy – ‘2 part’

1: Organic growth:

• Optimize/expand existing Holpan-Klipdam & Wouterspan operations

• ~20% leverage ability in short term with existing plant & equipment (ie. 2000 to 2400 carats per month)

• Evaluate/develop other properties already held in South Africa

• Develop DRC enterprise ~30km of 60km-long concession

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Growth Strategy – ‘2 part’

2: Acquisitive growth:

• Pursuing two established diamond operations with significant resources (+90M tonnes) in RSA

• Other private & listed diamond companies in RSA (via cash or ‘paper’)

• Double production (2000 to 4000 carats per month) in medium term (12 months)

• ‘Earmarked’ several ‘established’ ventures in other southern African countries

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Growth Opportunities – Holpan/Klipdam

PrieskaPrieska

WouterspanWouterspan

DouglasDouglas

Middle OrangeMiddle Orange

KimberleyKimberleyBloemfonteinBloemfontein

Vaal RiverVaal RiverBloemhofBloemhof

JohannesburgJohannesburgVentersdorpVentersdorp

PretoriaPretoria

BotswanaBotswana

LesothoLesotho

RSARSA

00 300300

KilometresKilometres

NN

Limpopo R

iver

Molopo

River

RietRiver

RietRiver

OrangeRiver

OrangeRiver

Holpan-KlipdamHolpan-Klipdam

Potential AcquisitionPotential

Acquisition

Potential AcquisitionPotential

Acquisition

RSARSA

60km-longOpportunity60km-long

Opportunity

Holpan+Klipdam

Wakefords

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Growth Opportunities-Middle Orange River

Wouterspan

xx

x

x

x

x

$$

$

$

$

10 kmsPrieska

Douglas

$ North-bank Terraces

X South-bank Terraces

(Trans Hex Group)

152 carats

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MidaminesConcession

Democratic Republic of Congo

Knownkimberlites

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September 2005 Production: (2,700c @ ~$120/c)

• Extensive Midamines concession (66km north-south) along Cuango River

• Current small scale production

• Downstream of rich Angolan alluvial deposits and diamondiferous kimberlites

• Interpolated grades ~ 5 to 6 carats per tonne

• Diamond value US$110/ct – 120/ct

Project Summary: DRC Exploration

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DRC Cuango River Site

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Future:• Delineation of channels through

geophysics and prospecting• Large scale earth moving as per

ITM & SDM operations upstream on Cuango River in Angola

DRC: Cuango River Project

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Key Investment Highlights

• Proven operations - scaleable capacity, long-life resources, excellent operational skills

• Operating margins approximately 50%

• Predominantly +2 carats large gemstones of exceptional quality

• Current production 2000 carats (US$3M) per month

• Equivalent to 300,000 carats per annum of kimberlite production

• Leverage opportunity (~20%) in existing operations

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Key Opportunities

Acquisitions with history of production, delineated resources and high value diamonds (RSA)

• MOR area: ~90M tonnes with established infrastructure and similar deposits to Wouterspan

• NW Province: established mining operation with significant resources

• Double production in short term from 2000 to 4000 carats per month

• Increase economies of scale, optimize overheads, reduce unit costs

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Capital Structure

Listed TSXV – RVI OTCBB – RVINF

Shares Issued 68.3 million

Fully Diluted Shares 121 million

Principals Control 20%

Working Capital C$10 million

Cash From Dilutables C$25 - 42 million

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PRODUCER

VALUE ADDERStrategic

Beneficiation & Marketing

Evaluation(Exploration)

CONSOLIDATOR

RVI Strategy