REG - Blencowe Resources - High Value Synthetic Diamond Manufacture

Blencowe ResourcesAnnouncement

10/02/2026 07:00

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RNS Number : 3995S  Blencowe Resources PLC  10 February 2026

Date: 10 February 2026

 

Blencowe Resources Plc

("Blencowe" or the "Company"),

 

Orom-Cross Graphite Confirms High-Quality Feedstock for High Value Synthetic
Diamond Manufacture

Additional test work demonstrates strong conversion yields and economically
viable non-China production potential

 

 

Blencowe Resources Plc (LSE: BRES) is pleased to announce the results of
additional test work confirming that graphite concentrates from the Orom-Cross
Project are suitable for the manufacture of synthetic industrial diamonds,
further validating the quality, versatility and downstream optionality of the
Company's graphite feedstock.

The test work was undertaken by American Energy Technology Co. ("AETC") in
Chicago and forms part of Blencowe's value-addition programme focused on
demonstrating commercially viable, non-China downstream applications for
Orom-Cross graphite.

Crucially, the test work achieved a diamond conversion yield of 53.6wt%,
exceeding the typical industry benchmark of approximately 50%.  AETC notes
that this threshold is widely regarded as critical in determining whether
synthetic diamond production can be undertaken economically outside China,
given the highly competitive cost structure of the industry. Conversion yields
below this level typically necessitate lower-cost Chinese processing to remain
viable.

Production of industrial diamonds provides Orom-Cross with another significant
value-adding enhancement opportunity beyond sale of graphite as concentrates
and Blencowe will be seeking offtake opportunities in this sector ahead as it
continues to drive towards first production.

 

Synthetic Diamond Test Work - Highlights

·      Successful synthesis of robust industrial diamonds from
Orom-Cross graphite concentrate

·      All diamonds produced were mono-crystalline, a higher-value
structure than polycrystalline alternatives

·      Average particle size of 50-60 microns, with oversized diamonds
up to 350-500 microns

·      Conversion yield of 53.6wt%, supporting cost-competitive
production outside China

 

AETC further observed that many natural graphites, including several deposits
across East Africa, are less suitable for synthetic diamond manufacture due to
thicker, less compressible flake structures, which inhibit efficient diamond
formation. In contrast, the fine, compressible flake characteristics of
Orom-Cross graphite proved highly conducive to diamond synthesis, representing
a distinctive quality signature of the deposit.

 

Strategic Context

Synthetic diamond manufacture is a specialised, high-value industrial market
where feedstock quality and conversion efficiency directly influence cost
competitiveness. These results confirm that Orom-Cross graphite meets the
technical thresholds required to support economically viable diamond
production outside China, opening additional downstream pathways alongside the
Company's core battery and energy transition strategy.

This optionality further differentiates Orom-Cross as a high-quality,
non-China graphite source, aligned with increasing Western focus on secure
supply chains, local processing and advanced manufacturing.

Importantly, the confirmation of multiple high-value end markets strengthens
the overall Orom-Cross development case and supports Blencowe's ongoing
funding and offtake processes. In parallel, the Company continues to progress
drilling and resource definition across the project, with remaining assay
results from the Iyan and Beehive programmes expected to be reported
progressively, building toward sequential JORC resource updates.

 

Cameron Pearce, Blencowe's Executive Chairman commented:

"This work highlights a fundamental characteristic of Orom-Cross graphite: its
quality extends beyond battery applications into demanding industrial uses
where conversion efficiency and cost competitiveness are critical. Achieving
mono-crystalline diamond formation at conversion yields above industry
benchmarks reflects the compressibility and structural integrity of our
graphite, which continues to differentiate the project.

As further drill results and technical validation are delivered, Orom-Cross
continues to mature as a scalable, high-quality graphite development. This
progress strengthens the underlying project fundamentals and is directly
supporting funding and offtake discussions currently underway, as we advance
toward the next resource update."

 

 

**ENDS**

 

 

 

 

 

 

For further information please contact:

 

 Blencowe Resources Plc                   www.blencoweresourcesplc.com (http://www.blencoweresourcesplc.com/)

 Sam Quinn (Director)                     Tel: +44 (0)1624 681 250

                                          info@blencoweresourcesplc.com (mailto:info@blencoweresourcesplc.com)

 Sasha Sethi (Investor Relations)         Tel: +44 (0) 7891 677 441

                                          sasha.sethi@blencoweresourcesplc.com
                                          (mailto:sasha.sethi@blencoweresourcesplc.com)
 Tavira Financial (Joint Broker)

 Jonathan Evans                           Tel: +44 (0)20 3192 1733

                                          jonathan.evans@tavira.group (mailto:jonathan.evans@tavira.group)
 Oak Securities (Joint Broker)

 Calvin Man /Mungo Sheehan / Jerry Keen   Tel: +44 (0)20 3973 3678

 Twitter                                  https://twitter.com/BlencoweRes (https://twitter.com/BlencoweRes)
 LinkedIn                                 https://www.linkedin.com/company/72382491/admin/
                                          (https://www.linkedin.com/company/72382491/admin/)

 

 

 

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