Thorny River advances towards resource assessment

Botswana Diamonds PLC

("Botswana Diamonds" or the "Company")

Thorny River discovery advances towards resource assessment

Model of new Kimberlites Volumes

Botswana Diamonds ('BOD'), the AIM and BSE listed diamond explorer, updates the three-dimensional model of the recent kimberlite discovery on South Africa's Thorny River diamond project.

Following the recently announced discovery of a second kimberlite blow at Thorny River, independent specialists aggregated all the geophysical and drilling data to model the potential kimberlite volume of the two adjacent blows and the connecting kimberlite.  The updated model estimates a range for the two blows of between 300,000 to 600,000 tonnes in aggregate, which is up to a three-fold increase in the volume following the modelling of the first blow. 

Sample processing results from our May 2021 programme is expected to be available by the end of July, which will determine geological and grade continuity. The Company's expectation based on the historical grade of Thorny River / Marsfontain dykes is 60 carats per hundred tonnes (cpht). Immediately following this, we plan to drill the potential mineralisation between the two kimberlite blows to test our belief that the two blows potentially join. This will also refine our estimate of volumes.

John Teeling, chairman commented: "The revised model, potentially tripling the estimate of contained kimberlite, is very positive.  The extension of the blow eastwards toward the blow discovered in earlier drilling offers the tantalising prospect of joining the two into one orebody. We expect to drill the area between the two blows in August.  These are significant steps towards potentially discovering a commercial diamond orebody."

This release has been approved by James Campbell, Managing Director of Botswana Diamonds plc, a qualified geologist (Pr.Sci.Nat), a Member of the Geological Society of South Africa, a Fellow of the Southern African Institute of Mining and Metallurgy, a Fellow of the Institute of Materials, Metals and Mining (UK) and with over 35-years' experience in the diamond sector. 

The information contained within this announcement is deemed by the Company to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014 as it forms part of UK Domestic Law by virtue of the European Union (Withdrawal) Act 2018.

The person who arranged for the release of this announcement on behalf of the Company was James Campbell, Director

A copy of this announcement is available on the Company's website, at www.botswanadiamonds.co.uk

Enquiries:

www.botswanadiamonds.co.uk

ENDS