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DIAM.TO ·

STAR – Orion South Diamond Project Revised Mineral Resources Estimate Technical Report Filed ON SEDAR+

Technical Reports (NI 43-101)

NEWS RELEASE September 5, 2024

Stock Symbol: DIAM: TSX Saskatoon, Saskatchewan

STAR – ORION SOUTH DIAMOND PROJECT

REVISED MINERAL RESOURCES ESTIMATE TECHNICAL REPORT FILED ON SEDAR+

SASKATOON, Saskatchewan, September 5, 20 24 – Star Diamond Corporation (“Star Diamond” or the

“Company”) is pleased to announce that the Technical Report documenting the Revised Mineral Resource s

Estimate (see News Release dated July 24, 2024) for the Star – Orion South Diamond Project (the “Project”) has

been filed on SEDAR + (www.sedarplus.ca). This Technical Report has also been posted on the Star Diamond

website: Technical Report 2024.

The scientific and technical information contained in this press release has been prepared and verified by A.C.A.

Howe International Limited (“Howe”), under the supervision of Mr. Daniel C. Leroux, M.Sc., P. Geo. and the

Mineral Resource estimation methodology under the supervision of Peter Ravenscroft, FAusIMM, of

Ravenscroft Mining Advisors, an independent mining consultant, and a Qualified Person (“QP”) within the

meaning of National Instrument 43 -101 – Standards of Disclosure for Mineral Projects (“NI 43 -101”) of the

Canadian Securities Administrators. This Revised Mineral Resources estimate uses diamond industry standard

methods which are rigorously applied to the Star and Orion South evaluation data, acknowledging the

significant control that fundamental kimberlite geology has on the distribution of diamonds within these

deposits.

The Revised Mineral Resources estimate will now be incorporated into a re -optimized open pit mine plan for

the Project, which will include a re-evaluation of Mineral Reserves and an economic assessment based thereon.

It is anticipated this work will be com pleted during 2024-25 and will result in an updated Pre-feasibility Study

including a revised statement of Mineral Reserves for the Project, if warranted, and an economic assessment

based thereon. Accordingly, the M ineral Resources and economic assessment previously disclosed by Star

Diamond for the Project should no longer be relied upon.

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 Shime ll, Vice President Exploration, a registered Professional

Geoscientist in the Provinces of Saskatchewan and Alberta, who are Star Diamond’s QP’s 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 100% interest in the Fort à la Corne Project 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: [email protected]

Website www.stardiamondcorp.com

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Stay Connected with Us:

X (Twitter) - https://twitter.com/StarDiamondCorp

LinkedIn - https://www.linkedin.com/company/star-diamond-corp/

Facebook - https://web.facebook.com/stardiamondcorp

Instagram - https://www.instagram.com/stardiamondcorp

YouTube - https://youtube.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. All statements, other than statements of historical fact, are forward-

looking statements. Forward-looking information is often, but not always, identified by the use of words 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 S tar Diamond 's future

operations, future exploration and development activities or other development plans constitute forward- looking statements. By their

nature, statements referring to mineral reserves or mineral resources constitute forward-looking statements.

Forward-looking statements in this press release include but are not limited to statements with respect to the Revised Mineral Resources

Estimate; improvement in the Mineral Resource estimate; the re-optimization of the Star and Orion South open pits; the publication of

the Technical Report; and the aim of the Company to undertake a PFS and Feasibility Study and timelines.

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, developments in world diamo nd

markets, changes in diamond prices, risks relating to fluctuations 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 Star Diamond, 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 fi led Annual

Information Form, annual and interim MDA.

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

www.stardiamondcorp.com

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