Publication of Prospectus and Notice of SGM

Petra Diamonds Limited

("Petra", "the Company" or "the Group")

Publication of Prospectus

Notice of Special General Meeting

Further to the announcement in relation to the fully underwritten Rights Issue to raise gross proceeds of approximately US$25 million announced earlier today, Petra is pleased to announce that the FCA has approved the prospectus dated 17 October 2025 (the "Prospectus") in connection with the Rights Issue and the Prospectus has been published by the Company.

The Prospectus contains further details of the Rights Issue and, subject to certain exceptions, shareholders will shortly be sent a copy of the Prospectus or notification of the availability of the Prospectus. The Prospectus will also be available on the Company's website at https://prospectus.petradiamonds.com/ and will be submitted to the National Storage Mechanism, where it will be available for inspection at https://data.fca.org.uk/#/nsm/nationalstoragemechanism.

The Prospectus contains a notice of a Special General Meeting of the shareholders of the Company to be held at 8:30 a.m. (London time) on 6 November 2025 at the offices of Herbert Smith Freehills Kramer LLP, Exchange House, Primrose Street, London EC2A 2EG, United Kingdom.

The Special General Meeting is being held for the purpose of considering and, if thought fit, passing the Resolutions. The Resolutions will be proposed as either ordinary or special resolutions, as set out in the Notice of Special General Meeting, and will be passed if approved by the requisite majority of votes cast, either in person or by proxy.

Hard copies of the Prospectus will be available for inspection (for 12 months following admission of the Rights Issue shares) during normal business hours on any business day, free of charge, at the registered office of the Company at 107 Cheapside, London, EC2V 6DN, United Kingdom.

The defined terms set out in the Prospectus apply in this announcement.