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Southstone Minerals Reports Diamond Sales from Oena Mine Q4 2024 and Q1 2025 Results Highlight Special Stone Recovery

Financials

Southstone Minerals Reports Diamond Sales from Oena Mine

Q4 2024 and Q1 2025 Results Highlight Special Stone Recovery

VICTORIA, BRITISH COLUMBIA – 19 December 2024 - Southstone Minerals Limited (TSX.V: SML)

today reported diamond sales results from its majority -owned Oena Diamond Mine in South

Africa.

Key Highlights:

• Q4 2024 Performance (June-August 2024):

o Sold 174.73 carats (61 diamonds)

o Achieved average price of USD $2,586 per carat

o Total revenue: USD $451,915

• Q1 2025 Performance (September-November 2024):

o Sold 146.65 carats (88 diamonds)

o Achieved average price of USD $782 per carat

o Total revenue: USD $114,708

Special Size Diamond Sales (>10.8 carats):

Q4 2024 (Sandberg Section):

• Special stone: 23.06 carats sold for USD $225,559 ($9,781 per carat)

• Second stone: 13.04 carats sold for USD $27,600 ($2,117 per carat)

• Third stone: 13.24 carats sold for USD $74,369 ($5,617 per carat)

• Fourth stone: 15.19 carats sold for USD $46,888 ($3,087 per carat)

Q1 2025 (Oena Proper Section):

• Notable stone: 13.66 carats sold for USD $35,889 ($2,627 per carat)

Fiscal Year 2024 Performance:

• Total sales: 807.1 carats

• Gross revenue: USD $1,498,659

• Average price: USD $1,857 per carat

Current Operations Update:

• Additional 118.25 carats (57 diamonds) produced in November-December 2024

• These stones scheduled for January 2025 tender

• Mining operations shifted to Oena Proper Section in September 2024

• Processing facility with double eighteen-foot pan and Bourevestnik X-Ray Unit

Southstone Minerals Limited

2751 Graham Street

Victoria, British Columbia, V8T 3Z1

TSX Venture : SML

www.southstoneminerals.com

Production Statistics (Since August 19, 2023):

• Processed approximately 390,000 tonnes

• Recovered 1,072 carats

• Average stone size: 2.21 carats

• Average sale price per diamond: USD $1,692

Southstone manages Oena and is responsible for diamond sales, operational and mining consultation with

the contractor, mining license reporting requirements and security. The Company maintains a

management and security team in South Africa, including the C EO of African Star and the Oena

Operational Site Manager. The Company’s Executive Chairman, with external geological support, provides

operational support for internal reporting of Oena activities and provides geological and technical support

to the operations team and contractors.

The technical disclosure in this news release has been approved by Terry L. Tucker, P.Geo., Executive

Chairman of the Company, and a Qualified Person as defined by National Instrument 43 -101 of the

Canadian Securities Administrators.

ON BEHALF OF SOUTHSTONE MINERALS LIMITED

Terry L. Tucker, P.Geo.

Executive Chairman

For additional information, please contact Terry L. Tucker at [email protected]

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts

responsibility for the adequacy or accuracy of this release. Capitalized terms used herein that have not been defined have the same meanings

ascribed in the policies of the TSX.V.

Forward Looking Statements Disclaimer

Certain statements in this release are forward-looking statements, which are statements that are not purely historical, including any statements

regarding beliefs, plans, expectations, or intentions regarding the future. Forward looking statements in this news release include statements

relating to the Company’s proposed production timeline, and the Company’s plans for future production from the Oena Diamond Mine. Forward-

looking statements are often identified by terms such as “will”, “may”, “should”, “anticipate”, “expects” and similar expressions. All statements

included in this news release, other than statements of historical fact, are forward-looking statements that involve risks and uncertainties. There

can be no assurance that such statements will pr ove to be accurate and actual results, and future events could differ materially from those

anticipated in such statements. Important factors that could cause actual results to differ materially from the Company’s exp ectations include

quality and quantity of any mineral deposits that may be located, the Company’s inability to obtain any necessary permits, consents or

authorizations required for its activities, the Company’s inability to raise the necessary capital to be fully able to implement its business strategies,

and other risks and uncertainties disclosed in the Company’s latest interim Management Discussion and Analysis filed with cer tain securities

commissions in Canada.

The reader is cautioned that assumptions used in the preparation of any forward -looking statements herein may prove to be incorrect.

Events or circumstances may cause actual results to differ materially from those predicted, as a result of numerous known and unknown

risks, uncertainties, and other factors, many of which are beyond the control of the Company. The reader is cautioned not to place undue

reliance on any forward -looking information. Such information, although considered reasonable by management at the time of

preparation, may prove to be incorrect, and actual results may differ materially from those anticipated. Forward -looking statements

contained in this news release are expressly qualified by this cautionary statement. The forward -looking statements contained in this

news release are made as of the date of this news release and the Company will update or revise publicly any of the included forward -

looking statements as expressly required by Canadian securities law.

Table 1: Q4 2024 and Q1 2025 total diamond sales and partial Q2 2025 production

Photo 1 – 23.06 Carat stone sold for USD 225,559 or USD 9,781 per carat.

Period

Mining location

African Star Tender

No.

CS Diamonds

Tender No.

Carats sold

Gross

revenue

(USD)

Price per

carat

(USD)

Q4 2024 Sandberg Section AS Tender 13

CS Tender 256

164.11

(53 diamonds)

$448,957 $2,736

Q4 2024 Sandberg Section AS Tender 14

CS Tender 258

10.63

(8 diamonds)

$2,958 $278

Q4 2024

Subtotal

174.73

(61 diamonds)

$451,915 $2,586

Q1 2025 Oena Proper &

Sandberg Section

AS Tender 15-17

CS Tender 260-261

146.65

(88 diamonds)

$114,708 $782

Q2 2025

to date

Sub Total

118.25

(57 diamonds)

January

2025

tender