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AR DIAMOND CORPORATION ANNOUNCES THIRD QUARTER 2020 RESULTS S tar Diamond Corporation (the “C ompany” or “Star Diamond” ) reports that the un audited results of its operations for the three and nine months ended

Financials

NEWS RELEASE November 12, 2020

TSX: DIAM Saskatoon, Saskatchewan

ST

AR DIAMOND CORPORATION ANNOUNCES THIRD QUARTER 2020 RESULTS

S

tar Diamond Corporation (the “C ompany” or “Star Diamond” ) reports that the un audited results of its

operations for the three and nine months ended September 30, 2020 will be filed today on SEDAR and may be

viewed at www.sedar.com once posted. A summary of key financial and operating results for the quarter ended

September 30, 2020 is as follows:

Highlights

- Announced that Rio Tinto Exploration Canada Inc. (“Rio Tinto Canada ”), a wholly-owned subsidiary of Rio

Tinto plc, continued processing of bulk samples from R io Tinto Canada’s 10 trench cutter hole program

conducted in 2019 on the Company’s 100% held Star and Orion South Kimberlites (the “Star - Orion South

Di

amond Project”, or the “Project”)

- Announced that, as part of the legal proceedings against Rio Tinto Canada related to its purported exercise

in November 2019 of its four options under the Option to Joint Venture Agreement dated June 22, 2017 (the

“Option Agreement”), Rio Tinto Canada will be prohibited from calling and/or conducting any meeting of

the management committee under the R io Tinto Canada /Star Diamond joint venture agreement (the “JV

Agreement”) for a period of 120 days following R io Tinto Canada completing the processing, diamond

recovery and reporting of all diamond results on the samples previously taken from the 10 cutter holes

completed during 2019

- Working capital of $5.0 million at September 30, 2020

- Issued and outstanding shares of 432.8 million at September 30, 2020

Overview

Star Diamond Corporation is a Canadian natural resource company focused on exploring and developing

Saskatchewan's diamond resources. In June 2017, the Company announced that it had acquired from Newmont

Corporation all of its participating interest in the Fort à la Corne joint venture (the "FalC JV"), resulting in the

Company owning 100% of the Fort à la Corne mineral properties (including the Project), and concurrently entered

into the Option Agreement with Rio Tinto Canada pursuant to which the Company granted to Rio Tinto Canada

an option to earn up to a 60% interest in the Company’s Fort à la Corne mineral properties (including the Project)

on the terms and conditions contained in the Option Agreement (see News Release dated June 23, 2017).

Activities relating to the Star - Orion South Diamond Project

During the second quarter of 2020, the Company announced that Rio Tinto Canada had commenced the

processing of bulk samples from Rio Tinto Canada’s trench cutter program on the Star Kimberlite (s ee News

Release dated April 23, 2020). The mineral concentrates produced by the on-site bulk sample plant (the “BSP”)

are being shipped by Rio Tinto Canada to an off-site facility for final diamond recovery and reporting of such

recovery to Star Diamond and Rio Tinto Canada.

To date, kimberlite material from nine trenches (19FALCT001, 19FALCT004, 19FALCT003, 19FALCT010,

19FALCT008, 19FALCT009, 19FALCT005, 19FALCT002 and 19FALCT007) has been processed by Rio Tinto Canada

through the BSP. The preliminary results from the first four bulk sample trenches have been previously disclosed

by Star Diamond (see News Releases dated August 4, 2020, August 20, 2020, September 21, 2020 and October

14, 2020).

The average diamond grades from the initial results of these first four trenches are similar to historical diamond

grade results from the underground bulk sampling and large diameter drilling (“LDD”) completed on the Star

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Kimberlite between 2004 and 2009. These results are also similar to the overall weighted average grade reported

in the Project’s independent Preliminary Economic Assessment (the “PEA”). However, as previously disclosed by

Star Diamond, the Company believes that Rio Tinto Canada’s extraction and diamond recovery methodologies,

including its use of unproven civil engineering trenching technologies to conduct bulk sampling of Kimberlite, is

causing undue diamond breakage, resulting in significant unnecessary cost overruns and materially damaging Star

Diamond’s interest in the Project. Comprehensive diamond breakage studies are required to assess the nature,

extent and potential causes of the diamond breakage, and the possibility that larger diamonds would have been

recovered absent such breakage.

Litigation Update

In November 2019, Star Diamond received notice from Rio Tinto Canada advising that it was purporting to exercise

all four of its options under the Option Agreement (see News Release dated November 15, 2019 ). In February

2020, the Company notified Rio Tinto Canada that its purported exercise of its four options under the Option

Agreement did not comply with the terms of the Option Agreement (see News Release dated February 18, 2020).

In March 2020, the Company announced that it had commenced legal proceedings (the “Legal Proceedings ”) in

the Court of Queen’s Bench for Saskatchewan against Rio Tinto Canada in relation to Rio Tinto Canada’s purported

exercise of its options under the Option Agreement (see News Release dated March 5, 2020).

As one step in the Legal Proceedings, the Company brought an interim injunction application seeking, among

other things, to restrain Rio Tinto Canada from calling any meeting of the management committee under the JV

Agreement until certain conditions were satisfied (see News Release dated June 2, 2020). Rio Tinto Canada

agreed, as part of its response to the injunction application, that Rio Tinto Canada would not call and/or conduct

any meeting of the management committee under the JV Agreement for a period of 120 days following Rio Tinto

Canada completing the processing, diamond recovery and reporting of all diamond results on the samples

previously taken from the 10 cutter holes completed on the Star Kimberlite by Rio Tinto Canada during 2019.

Relying on Rio Tinto Canada’s commitment during the hearing of the injunction application that this represented

an undertaking of R io Tinto Canada to the Court, the Court ultimately determined, after taking account of the

balance of convenience between Star Diamond and R io Tinto Canada, that an interim injunction would not be

granted, which would have extended the prohibition on Rio Tinto Canada calling and/or conducting a meeting of

the management committee until a further five cutter holes on the Orion South Kimberlite were drilled and fully

reported on, as had been requested by Star Diamond . In the result, R io Tinto Canada will be prohibited from

calling and/or conducting any meeting of the management committee under the JV Agreement for a period of

120 days following Rio Tinto Canada completing the processing, diamond recovery and reporting of all diamond

results on the samples previously taken from the 10 cutter holes completed during 2019 (see News Release dated

August 11, 2020).

Star Diamond continues to vigorously pursue the Legal Proceedings, and is committed to taking all actions

necessary to protect Star Diamond and its shareholders from the practices and conduct of Rio Tinto Canada

including if necessary by seeking to remove Rio Tinto Canada from the Project. The Court has not yet established

a timetable for the hearing on the merits in the Legal Proceedings or the various pre-trial steps that will precede

it.

Quarterly results

For the quarter ended September 30, 2020, the Company recorded a net loss of $1.7 million or $0.00 per share

(basic and fully diluted) compared to a net loss of $0.8 million or $0.00 per share for the same period in 2019. The

losses during these quarters were due to operating costs and exploration and evaluation expenditures incurred

by the Company exceeding interest and other income earned on cash and cash equivalents .

Year to date res ults

For the nine months ended September 30, 2020, the Company recorded a n et loss of $ 4.2 million or $0.01 per

share compared to a net loss of $3.2 million or $0.01 per share for the same period in 2019. The loss during the

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nine month periods e nded September 3 0, 2020 and 2019 were primarily due to ongoing ope rating costs and

exploration and evaluation expenditures incurred by the Company exceeding interest and other income earned.

Selected financial highlights include:

Condensed Consolidated Statements of Financial Position

As at

September 30,

2020

As at

December 31,

2019

Current assets $ 5.3 M $ 8.0 M

Exploration and evaluation, capital and other assets 67.8 M 67.7 M

Current liabilities 0.3 M 0.3 M

Non-current liabilities 1.5 M 1.6 M

Shareholders’ equity 71.3 M 73.8 M

Condensed Consolidated Statements of Loss

Three Months

Ended

September 30,

2020

Three Months

Ended

September 30,

2019

Nine Months

Ended

September 30,

2020

Nine Months

Ended

September 30,

2019

Interest and other income $ 0.0 M $ 0.0 M $ 0.1 M $ 0.0 M

Expenses 1.8 M 0.8 M 4.5 M 3.2 M

Investment in Wescan Goldfields Inc. 0.1 M 0.0 M 0.2 M 0.0 M

Net loss for the period 1.7 M 0.8 M 4.2 M 3.2 M

Net loss per share for the period (basic and diluted) 0.00 0.00 0.01 0.01

Condensed Consolidated Statements of Cash Flows

Nine Months

Ended

September 30,

2020

Nine Months

Ended

September 30,

2019

Cash flows from operating activities $ (3.7) M $ (2.2) M

Cash flows from investing activities 0.0 M 0.0 M

Cash flows from financing activities 1.0 M 2.7 M

Net increase (decrease) in cash (2.7) M 0.5 M

Cash – beginning of period 7.9 M 2.8 M

Cash – end of period 5.2 M 3.3 M

Outlook

The provincial environmental approval of the Star - Orion South Diamond Project received in 2018, alongside the

previous positive federal decision, marked a major milestone for the Project. In addition, the positive results of

the PEA announced in 2018 show that the Project can be economically developed and operated while providing

direct empl oyment for hu ndreds of peop le thro ughout th e c onstruction phase and hundreds of peopl e

continuously over its estimated 38 year mine life.

The succ essful comp letion of the 2017 conso lidation of the C ompany’s Fo rt à la Corne miner al proper ties

(including th e Star - Orion Sou th D iamond Proje ct), and the concu rrent e arn-in arrangement with Rio Tinto

Canada, d efined the start of a new phase for the Company. Th ere are some 60 oth er kimb erlites within the

Company’s Fo rt à la Corne diamond d istrict, o n mineral dispositions he ld 10 0 percent b y t he Company. The

Company is also very pleased to continue to have Newmont Corporation as a significant shareholder.

As of November 12, 2020, the Company had approximately $4.6 million in cash and cash equivalents (excluding

$0.6 million in restricted cash). A portion of the Company’s cash and cash equivalents will be used for programs

(including remaining flow-through commitments) to further assess, evaluate and advance certain aspects of the

Company’s mineral properties, as well as for general corporate matters.

About Star Diamond Corporation

Shares of the Company trade on the TSX Exchange under the trading symbol “DIAM”. The Fort à la Corne

kimberlites (including the Star - Orion South Diamond Project) are located in central Saskatchewan in close

proximity to established infrastructure, including paved highways and the electrical power grid, which provide

significant advantages for future mine development.

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During 2018, the Company announced the positive results of the PEA on the Project. The PEA estimates that 66

million carats of diamonds could be recovered in a surface mine over a 38 -year Project life, with a Net Present

Value (7%) of $2.0 billion after tax, an Internal Rate of Return of 19% and an after-tax payback period of 3.4 years

after the commencement of diamond production (see News Release dated April 16, 2018).

During 2018, the Saskatchewan Ministry of Environment approved the Company’s Star - Orion South Diamond

Project (See News Release dated October 25, 2018). The Canadian Environmental Assessment Agency previously

announced a positive Environmental Assessment Decision for the proposed Project by the federal Environment

Minister (See News Release dated December 3, 2014).

C

aution Regarding Forward-looking Statements

This news release contains forward -looking statements as defined by certain securities laws, including the "safe harbour" provisions of

Canadian securities legislation and the United States Private Securities Litigation Reform Act of 1995. Forward-looking information is often,

but not always, identified by the use of word s such as "anticipate", "believe", "expect", "plan", "intend", "forecast", "target", "project",

"guidance", "may", "will", "should", "could", "estimate", "predict" or similar words suggesting future outcomes or language suggesting an

outlook. In particular, statements regarding the Company's future operations, future exploration and development activities or other

development plans constitute forward-looking statements. By their nature, statements referring to mineral reserves, mineral resources or

the PEA constitute forward-looking statements. Forward-looking statements contained or implied in this news release include, but are not

limited to, statements related to the Legal Proceedings commenced by the Company against Rio Tinto Canada; statements regarding the

processing and analysis of, and reporting of results from, the bulk samples previously collected by Rio Tinto Canada and the timeline for

doing so; statements related to diamond breakage; disclosure regarding the economics and project parameters presente d in the PEA,

including, without limitation, Internal Rate of Return, Net Present Value and other costs and economic information, carats of diamonds to

be recovered, after-tax payback period, tonnes of kimberlite to be mined, carats per tonne to be recovered (grade), diamond prices, project

life, life of mine, capital costs, and length of pre -production period; statements related to mineral resources and/or reserves; statements

related to the approval of the development of the Star - Orion South Diamond Project; statements relating to future development of the

Star - Orion South Diamond Project and associated timelines; statements with respect to environmental permitting and approvals ; the

Company's need for and intention to seek additional financing; statements with respect to metallurgical investigations, assessments and

test work; and the potential proportion of Type IIa diamonds in the Star and Orion South kimberlites and the potential for the recovery of

large high quality diamonds.

These forward-looking statements are based on the Company's current beliefs as well as assumptions made by and information currently

available to it and involve inherent risks and uncertainties, both general and specific. Risks exist that forward-looking statements will not

be achieved due to a number of factors including, but not limited to, developments in world diamond markets, changes in diamo nd

valuations, risks relating to fl uctuations in the Canadian dollar and other currencies relative to the US dollar, changes in exploration,

development or mining plans due to exploration results and changing budget priorities of Rio Tinto Canada or the Company, the effects of

competition in the markets in which the Company operates, risks related to the Legal Proceedings commenced by the Company against

Rio Tinto Canada, the impact of the COVID-19 pandemic, risks related to the operation of the BSP and the processing methods being used

by Rio Tinto Canada and the effectiveness thereof, risks related to diamond breakage and cost overruns and other consequences arising

from Rio Tinto Canada’s extraction and diamond recovery methodologies, risks related to the Company’s need for additional financing and

the Company’s ability to raise that financing, the impact of changes in the laws and regulations regulating mining exploration and

development, judicial or regulatory judgments and legal proceedings, operational and infrastructure risks and the additional risks described

in the Company’s most recently filed Annual Information Form, annual and interim MD&A, news releases and technical reports. The

Company’s anticipation of and success in managing the fo regoing risks could cause actual results to differ materially from what is

anticipated in such forward-looking statements.

Although the Company considers the assumptions contained in forward- looking statements to be reasonable based on information

currently available to it, those assumptions may prove to be incorrect. When making decisions with respect to the Company, investors and

others should not place undue reliance on these statements and should carefully consider the foregoing factors and other uncertainties

and potential events. Unless required by applicable securities law, the Company does not undertake to update any forward- looking

statement that is made herein.

For further information: [email protected] or (306) 664-2202

www.stardiamondcorp.com

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