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DIAM.TO ·

STAR - Orion South Diamond Project Processing of STAR Trench Cutter Bulk Samples Commences

Metallurgy & Processing

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NEWS RELEASE April 23, 2020

Stock Symbol: DIAM: TSX Saskatoon, Saskatchewan

STAR - ORION SOUTH DIAMOND PROJECT

PROCESSING OF STAR TRENCH CUTTER BULK SAMPLES COMMENCES

Star Diamond Corporation (“Star Diamond” or the “Corporation” ) announced today that Rio Tinto Exploration

Canada Inc. (”RTEC”) has commenced the processing of bulk samples from RTEC’s trench cutter program . These

bulk s amples, estimated by RTEC to be approximately 8,271 wet ton nes, were collected during 2019 on the

Corporation’s Star Kimberlite and are stored on-site in approximately 6,848 cubic metre bulk bags.

The on-site bulk sampling plant (the “BSP”) was fabricated by Consulmet (Pty) Ltd of South Africa. The BSP uses X-

ray transmission sorting technology to recover any large diamonds present (6 to 25 millimetres). All the 0.85 to 6.0

millimetre kimberlite fraction is then processed through a DMS cyclone to prepare a diamond -bearing heavy

mineral concentrate for the recovery of the 0.85 to 6.0 millimetre diamonds. A secondary crushing circuit, using a

high-pressure rolls crusher, aims to maximize the liberation of smaller diamonds from the kimberlite. Star Diamond

has been advised by RTEC that it is has completed commissioning of the BSP.

The mineral concentrates produced by the BSP are expected to be shipped, on an ongoing basis, to an off-site facility

for final diamond recovery and reporting of such recovery to Star Diamond and RTEC.

Star Diamond currently expects that all or substantially all of the bulk samples collected during 2019 will be

processed through to final diamond recovery and reported over the balance of calendar 2020, provided that there

are not any unexpected material delays in this process including arising from COVID-19 issues. Star Diamond looks

forward to providing periodic updates regarding the bulk sample processing and results obtained in accordance

with its public disclosure obligations.

About Star Diamond Corporation

Star Diamond Corporation is a Canadian based corp oration engaged in the acquisition, exploration and

development of mineral properties. Shares of the Corporation trade on the TSX Exchange under the trading symbol

“DIAM”. The Corporation’s 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.

All technical information in this press release has been prepared under the supervision of George Read, Senior Vice-

President of Exploration and Development, a registered Professional Geoscientist in the Provinces of Saskatchewan

and British Columbia and Mark Shimell, Project Manager, a registered Professional Geoscientist in the Province of

Saskatchewan, who are the Corporation’s “Qualified Persons” under the definition of NI 43-101.

Caution 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 words such as "anticipate", "believe", "expect", "plan", "intend", "forecast", "targ et", "project",

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

outlook. In particular, statements regarding the Corporation's future operations, future exploration and development activities or oth er

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

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or TFFE constitute forward -looking statements. Forward-looking statements contained or implied in this press release include, but are not

limited to, the Corporation’s expectations regarding the processing of bulk samples and the timeline for doing so.

These forward-looking statements are based on the Corporation'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 diamond prices, risks relating to fluctuations in the Canadian dollar and other cur rencies relative to the

US dollar, changes in exploration, development or mining plans due to exploration results and changing budget priorities of RTEC or the

Corporation, risks related to the legal proceedings commenced by the Corporation against RTEC, the effects of competition in the markets in

which the Company operates, the impact of the COVID -19 pandemic, risks related to the operation of the BSP and the processing methods

being used by RTEC and the effectiveness thereof, 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 the Corporation's most recently filed Annual Information Form, annual and interim MD&A. The Corporation's anticipation of and

success in managing the foregoing risks could cause actual results to differ materially from what is anticipated in such forw ard-looking

statements.

Although management 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 Corporation, investor s and others

should not pla ce 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 Corporation 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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