STAR - ORION SOUTH DIAMOND PROJECT

KIMBERLITE CARBON CAPTURE: WORKING TOWARDS A CARBON NEGATIVE DIAMOND MINE

TSX: DIAM

Star Diamond Corporation (TSX: DIAM) ("Star Diamond" or the "Company") is pleased to provide this technical update on the opportunity for Carbon capture using processed kimberlite from the Star Orion South Diamond Project. This process is known as Carbon mineralization and preliminary studies referenced below indicate that kimberlite waste rock from these kimberlites may indeed function as a significant sink of atmospheric CO 2.

Star Diamond Corporation Logo (CNW Group/Star Diamond Corporation)

Highlights
  • The most common mineral in kimberlite is Olivine, and its Serpentine Group weathering products, which, when exposed to the atmosphere at the Earth's surface, react with carbon dioxide ("CO 2 ") to form solid mineral carbonates and remove carbon from the atmosphere.
  • During our recent joint venture with Rio Tinto Exploration Canada Inc. ("RTEC"), RTEC as Project Manager, contracted academics at the University of Alberta (Professor Sasha Wilson ) and Trent University (Dr. Ian Power ) to analyse kimberlite samples from both the Star and Orion South Kimberlites to determine the modal proportions of Olivine minerals in each sample and the ability of these Olivine minerals to react with CO 2 to form solid, stable carbonate products.
  • The initial studies at the two universities have shown that the Star and Orion South samples contain significant proportions (62.5 – 83.5%) of Lizardite, a Serpentine Group weathering product of Olivine that reacts with CO 2 .
  • When exposed to the atmosphere at the Earth's surface, Lizardite reacts with CO 2 to form stable carbonates. Laboratory studies conducted at the universities show that, under specific conditions, these Lizardite containing kimberlite samples can react with significant quantities of CO 2 and remove it from the atmosphere: as much as 398 kg CO 2 per tonne of processed kimberlite when fully reacted.
  • The 2018 Preliminary Economic Assessment(" PEA") estimates that for a future mine on the Star and Orion South Kimberlites, some 470 million tonnes of kimberlite will be processed at a rate of 45,000 tonnes per day, over 34 years, to recover about 66 million carats of diamonds. Star Diamond is working with the academic institutions to develop a scope of work to investigate Carbon mineralization opportunities for this enormous volume of processed kimberlite.
  • A future mine to recover diamonds from the Star and Orion South Kimberlites has the advantage of being supplied with electricity from the SaskPower grid. Consequently, all waste stripping, ore mining and delivery to the processing plant and processing equipment can operate on grid power, resulting in an unusually low carbon footprint for the mine.

The university laboratories were provided with fifteen samples, which include six core samples of Early Joli Fou kimberlite breccia ("EJF-KB"), Early Joli Fou pyroclastic kimberlite ("EJF-PK") and country rock Shale. There are also samples of processed products including fine, processed kimberlite ("PK") from the fines management area ("FMA") and processed kimberlite lights from the dense media separator ("DMS FLOATS"). The six core samples were initially crushed and all 15 samples were pulverized in an agate mill. X-ray diffraction was used to determine the quantitative mineralogy of the samples. Thirteen samples were shown to contain significant proportions of the Serpentine Group mineral Lizardite, which is reactive with CO 2 . Under specific laboratory conditions the maximum CO 2 mineralization potential, expressed as kilograms of CO 2 that reacts with the Lizardite, per tonne of material sampled, was determined for each of the Lizardite bearing samples and these results are shown in Table 1 below.

Table 1. Samples details and results .

Sample #

Source 1

Type 2

Lizardite %

Lizardite

CO 2 Mineralization Potential

(kg CO 2 /tonne)

1

FMA

PK

77.7

370

2

FMA

PK

65.8

314

3

FMA

PK

63.6

303

4

FMA

PK

62.5

298

5

FMA

PK

74.8

356

6

DMS Floats

PK

70.3

335

7

DMS Floats

PK

76.8

366

8

DMS Floats

PK

75.3

359

9

DMS Floats

PK

57.5

274

10

SPF-024

Shale

-

0

11

SPF-024

Shale

-

0

12

SPF-033

EJF-KB

83.5

398

13

SPF-033

EJF-KB

78.9

376

14

SPF-033

EJF-PK

73.1

348

15

SPF-034

EJF-PK

76.4

364

1. FMA – Fines Management Area, DMS Floats – Dense media separator light fraction, SPF – Drill Core

2. PK – Processed kimberlite fines, Shale – country rock, EJF-KB – Early Joli Fou kimberlite breccia, EJF-PK – Early Joli Fou pyroclastic kimberlite

These initial results illustrate that there is potential for the Lizardite in the processed kimberlite, from the Star and Orion South Kimberlites, to capture significant quantities of atmospheric CO 2 , which can have a positive effect on the lowering of the carbon footprint of a future mine. Additional analyses need to be conducted on larger samples with the aim of developing carbon capture methods that can be incorporated in a future diamond mine.

Senior VP Corporate Development Star Diamond, George Read , states: "These initial results illustrate that there are opportunities for future carbon sequestration from processed kimberlite ore. While these initial results have been developed on small samples under carefully controlled laboratory conditions, we hope that further work on larger samples will enable processes to be incorporated in the processing of kimberlite and the construction of waste dumps that can accelerate these carbon capture reactions, particularly with the vast quantities of Lizardite that will end up in the waste material. The proximity to infrastructure, particularly the electrical power grid, provides a future Fort à la Corne diamond mine with a unique opportunity to minimize its carbon footprint, as all mining, ore and waste movement and ore processing can be accomplished using electrically powered equipment."

Interim President and CEO, Ewan Mason , states: "While these results are preliminary, they never-the-less indicate that we may be able to extract Carbon from the atmosphere by filtering out CO 2 using waste rock as a storage sink. Should this turn out to be the case, we will be exploring the applicability of utilizing the Carbon Capture and Storage refundable tax credits announced by the federal government in its 2022 Federal Budget as part of our Feasibility Study planning. Given the projected mining rate of 45,000 tonnes of ore per day from our 2018 PEA, we can see that the Fort à la Corne kimberlites could indeed become a colossal Carbon sink if we can scale a Carbon capture process to our contemplated operations. This then could play a significant role in helping Canada meet its greenhouse gas (GHG) emissions reduction targets."

All technical information in this press release has been prepared under the supervision of George Read, Senior Vice President Corporate Development, a registered Professional Geoscientist in the Provinces of Saskatchewan and British Columbia and Mark Shimell, Vice President Exploration, a registered Professional Geoscientist in the Province of Saskatchewan and Alberta , who are the Corporation's "Qualified Persons" under the definition of NI 43-101.

About Star Diamond Corporation
Star Diamond is a Canadian-based corporation engaged in the acquisition, exploration and development of mineral properties. Shares of Star Diamond trade on the Toronto Stock Exchange under the trading symbol "DIAM". Star Diamond's most significant asset is its interest in the Fort à la Corne property in central Saskatchewan. These kimberlites are located in close proximity to established infrastructure, including paved highways and the electrical power grid, which provide significant advantages for future mine development.

For further information, please contact: Phone: (306) 664-2202
Email: stardiamondcorp@stardiamondcorp.com
Website www.stardiamondcorp.com

Stay Connected with Us:
Twitter: https://twitter.com/StarDiamondCorp
LinkedIn: https://www.linkedin.com/company/star-diamond-corp
Facebook: https://www.facebook.com/people/Star-Diamond-Corp/100058096376664/
Instagram: https://www.instagram.com/stardiamondcorp/

C aution Regarding Forward-looking Statements
This press release contains "forward-looking statements" and/or "forward-looking information" (collectively, "forward-looking statements") within the meaning of applicable securities legislation. All statements, other than statements of historical fact, are forward-looking statements. The use of any of the words "anticipate", "plan", "aim", "target", "contemplate", "continue", "estimate", "expect", "intend", "propose", "might", "may", "will", "shall", "project", "should", "could", "would", "believe", "predict", "forecast", "pursue", "potential", "possible", "capable" and similar expressions are intended to identify "forward-looking statements. Forward-looking statements in this press release include, but are not limited to, expectations regarding the completion of the transactions that are the subject of the Agreement and the Project's potential to be a significant contributor to both the local communities and the broader Saskatchewan economy.

These forward-looking statements are based on Star Diamond'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, the impact of changes in the laws and regulations regulating mining exploration, development, closure, judicial or regulatory judgments and legal proceedings and the additional risks described in Star Diamond's most recently filed Annual Information Form, annual and interim MD&A.

Although management of Star Diamond considers the assumptions contained in forward-looking statements to be reasonable based on information currently available to Star Diamond , those assumptions may prove to be incorrect. When making decisions with respect to Star Diamond , investors and others should not place undue reliance on these statements and should carefully consider the foregoing factors and other uncertainties and potential events.

Star Diamond does not undertake any obligation to release publicly revisions to any forward-looking statement to reflect events or circumstances after the date of this release, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws. Investors should not assume that any lack of update to a previously issued forward-looking statement constitutes a reaffirmation of that statement. Continued reliance on forward-looking statements is at investors' own risk.

SOURCE Star Diamond Corporation

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TSX: DIAM

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STAR DIAMOND CORPORATION ANNOUNCES 2023 YEAR END RESULTS

TSX: DIAM

Star Diamond Corporation ("Star Diamond" or the "Company") reports that the audited financial results for the year ended December 31, 2023 will be filed today on SEDAR+ and may be viewed at www.sedarplus.ca once posted.

Star Diamond Logo (CNW Group/Star Diamond Corporation)

Overview
Star Diamond Corporation is a Canadian natural resource company focused on exploring and developing Saskatchewan's diamond resources. Star Diamond currently holds, through a joint venture arrangement with Rio Tinto Exploration Canada Inc. ("RTEC"), a wholly-owned subsidiary of Rio Tinto plc, a 25% interest in certain mineral properties (which include the Star – Orion South Diamond Project, or the "Project") within the Fort à la Corne diamond district of central Saskatchewan, Canada . These properties are in close proximity to established infrastructure, including paved highways and the electrical power grid, which provide significant advantages for future mine development.

The Company also holds a 50% interest in the exploration and evaluation properties and assets of the Buffalo Hills JV located in north-central Alberta, Canada . Canterra Minerals Corporation ("Canterra") holds the remaining 50% interest. Canterra is the operator of the Buffalo Hills JV.

Fort à la Corne mineral properties
On November 28, 2023 , the Company entered into a binding agreement (the "Agreement") with RTEC, providing for the transfer by RTEC to Star Diamond all of RTEC's 75% interest in the Project.

The Agreement provides that, upon closing:

  • RTEC will transfer to Star Diamond all of RTEC's 75% interest in the Project, such that the Project will be 100% owned by Star Diamond ;
  • RTEC will transfer to Star Diamond ownership of the trench cutter drill rig used by RTEC to complete its prior bulk sampling program at the Project;
  • RTEC will transfer to Star Diamond the Bulk Sample Plant located at the Project, including the TOMRA XRT diamond sorting machine that is on-site;
  • Star Diamond will issue to RTEC and/or an affiliate that number of common shares of Star Diamond that results in RTEC and its affiliates owning 19.9% of the then outstanding common shares of Star Diamond (RTEC and its affiliates currently own approximately 2.3% of Star Diamond's outstanding common shares); and
  • RTEC and Star Diamond will enter into an Investor Rights Agreement whereby, among other things, RTEC will be granted certain pre-emptive rights to maintain its 19.9% ownership interest in Star Diamond in connection with future financings undertaken by Star Diamond , and RTEC will agree to certain standstill protections provided that RTEC will have the right to increase its 19.9% ownership position in the event that Star Diamond receives an acquisition proposal.

Upon completion of the transactions that are the subject of the Agreement, Star Diamond will have full control and responsibility for the Project, the existing joint venture agreement between RTEC and Star Diamond will terminate, and Star Diamond will release and indemnify RTEC for liabilities arising from or relating to the Project, all in exchange for a $4 million payment from RTEC to Star Diamond . RTEC has agreed that it will provide on Star Diamond's behalf, for up to five years following closing, letters of credit in the aggregate amount of no more than $9.9 million to secure certain environmental remediation and reclamation obligations related to the Project. Star Diamond will be obliged to repay any amounts drawn on these letters of credit and such repayment obligations will be secured against the Project and its assets.

As of the date of this News Release, the Agreement is expected to close in the near future.

Recent activities relating to the Star - Orion South Diamond Project and Fort à la Corne mineral properties
During the first quarter of 2024, Star Diamond continued to work with RTEC and Saskatchewan Ministry of Environment representatives to ensure an orderly close to the Agreement between Star Diamond and RTEC.

Year End Results
For the year ended December 31, 2023 , the Company recorded a net loss of $2.8 million or $0.01 per share (basic and fully diluted) compared to a net loss of $68.8 million or $0.15 per share in 2022. The decrease in net loss year over year was due primarily to the prior year's impairment charge of $66.3 million combined with the mark-to-market loss on the Wescan investment offset by the elimination of the $0.9 million contingent consideration.

At December 31, 2023 , the Company had $0.6 million (2022 – $2.6 million ) in cash and cash equivalents and a working capital deficit of $(0.3) million (2022 - $2.0 million ). The decrease in working capital was a result of administrative and exploration and evaluation expenditures offset by proceeds received from the December 2023 private placement. Subsequent to December 31, 2023 , the Company closed the second and final tranche of a non-brokered private placement. However, the ability of the Company to continue as a going concern and fund its expenses in an orderly manner will require additional forms of financings.

Selected financial highlights include:

Condensed Consolidated Statements of Financial Position

As at

December 31,

2023

As at

December 31,

2022

Current assets

$    0.6 M

$    2.7 M

Exploration and evaluation, investments and other assets

0.6 M

0.4 M

Current liabilities

0.9 M

0.7 M

Non-current liabilities

0.1 M

0.0 M

Shareholders' equity

0.2 M

2.4 M




Consolidated Statements of Loss

Year Ended
December 31,

2023

Year Ended
December 31,

2022

Expenses

$ 3.0 M

$ 3.0 M

Loss before undernoted items

(3.0)M

(3.0)M

Investment in Wescan Goldfields Inc.

(0.0)M

(0.4)M

Contingent consideration

0.0 M

0.9 M

Impairment charge

0.0 M

(66.3)M

Net loss for the year

(3.0)M

(68.8)M

Net loss per share for the year (basic and diluted)

(0.01)

(0.15)




Condensed Consolidated Statements of Cash Flows

Year Ended
December 31,

2023

Year Ended
December 31,

2022

Cash flows used in operating activities

$  (2.3)M

$  (4.9)M

Cash flows from investing activities

0.0 M

0.6 M

Cash flows from financing activities

0.2 M

5.7 M

Net increase (decrease) in cash

(2.1)M

1.3 M

Cash – beginning of year

2.6 M

1.3 M

Cash – end of year

0.6 M

2.6 M

Outlook
Fort à la Corne mineral properties
Subsequent to the successful close of the Agreement with RTEC, Star Diamond's technical team will focus on the technical investigation and evaluation of the Star – Orion South Diamond Project, with the goal of a future development decision. The initial work aims to prepare a revised Mineral Resource estimate for the Star – Orion South Diamond Project, which will form the foundation of an updated Prefeasibility study(" PFS"). The PFS will enable a Feasibility Study, on which a production decision can be based.

Buffalo Hills mineral properties
Management continues to review the recent results from the diamond valuation and typing analysis. A more detailed update on activities at the Buffalo Hills JV will be provided as it becomes available.

About Star Diamond Corporation
Star Diamond Corporation is a Canadian based corporation engaged in the acquisition, exploration and development of mineral properties. Shares of Star Diamond trade on the Toronto Stock Exchange under the trading symbol "DIAM". Star Diamond currently holds, through a joint venture arrangement with RTEC, a 25% interest in the Project. The Project is 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. The Company also holds a 50% interest in the exploration and evaluation properties and assets of the Buffalo Hills JV located in north-central Alberta, Canada . Canterra holds the remaining 50% interest and is the operator of the Buffalo Hills JV.

Technical Information
All technical information in this press release has been prepared under the supervision of George Read , Senior Vice President Corporate Development, Professional Geoscientist in the Provinces of Saskatchewan and British Columbia and Mark Shimell , Vice President Exploration, Professional Geoscientist in the Provinces of Saskatchewan and Alberta , who are the Company's "Qualified Persons" under the definition of NI 43-101.

Stay Connected with Us:
Twitter: https://twitter.com/StarDiamondCorp
LinkedIn: https://www.linkedin.com/company/star-diamond-corp
Facebook: https://www.facebook.com/people/Star-Diamond-Corp/100058096376664/
Instagram: https://www.instagram.com/stardiamondcorp/

Caution Regarding Forward-looking Statements

This press release contains "forward-looking statements" and/or "forward-looking information" (collectively, "forward-looking statements") within the meaning of applicable securities legislation. Generally, these forward-looking statements can be identified by the use of forward-looking terminology such as "plans", "expects" or "does not expect", "is expected", "budget", "scheduled", "estimates", "forecasts", "intends", "anticipates" or "does not anticipate" or "believes", or the negative connotation thereof or variations of such words and phrases or state that certain actions, events or results, "may", "could", "would", "will", "might" or "will be taken", "occur" or "be achieved" or the negative connotation thereof. All statements, other than statements of historical fact, are forward-looking statements.

These forward-looking statements are based on Star Diamond's current beliefs as well as assumptions made by and information currently available to Star Diamond 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, statements regarding Rio Tinto Canada, the Company's ability to obtain financing to further the exploration, evaluation and/or development of exploration and evaluation properties in which the Company holds interest, the economic feasibility of any future development projects, developments in world diamond markets, changes in diamond prices, risks relating to fluctuations in the Canadian dollar and other currencies relative to the US dollar, the impact of changes in the laws and regulations regulating mining exploration, development, closure, judicial or regulatory judgments and legal proceedings, operational and infrastructure risks and the additional risks described in Star Diamond's most recently filed Annual Information Form, and annual and interim MDA.

Although the Company has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. In addition, forward-looking statements are provided solely for the purpose of providing information about management's current expectations and plans and allowing investors and others to get a better understanding of our operating environment. Accordingly, readers should not place undue reliance on forward-looking statements.

Forward-looking statements in this news release are made as of the date hereof and Star Diamond assumes no obligation to update any forward-looking statements, except as required by applicable laws.

SOURCE Star Diamond Corporation

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