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Mantle Diamonds Limited is a diamond exploration company with projects at varying levels of development in Australia, Canada, Finland, Liberia and Mali. Established by Lester Kemp and Rupert Baring in September 2005, the company is registered in the UK and is currently held by a variety of institutions and private investors.
Mantle's primary focus is on kimberlite exploration and development. Mantle's portfolio of assets is geographically diversified with the deliberate intention of reducing both country/political and geological risk.
Mantle's aim is to acquire interests in advanced stage diamond projects so as to minimise exploration risk and accelerate timing to production.
Finland
Kaavi-Nurmes reservation
- 100% owned
- Located within the Kaavi – Kuhmo diamond corridor of southern central Finland
- Early exploration
- Full marketing rights to all diamonds produced from the project
Kaavi-Nurmes reservation
- 100% owned
- Northern central Finland – bordering Russia on it's eastern most boundary
- Drill ready targets
- Full marketing rights to all diamonds produced from the project
Gondwana Asset Purchase Agreement
- 100% owned subject to a royalty and cash payment
- Located within the Kuopio – Kaavi kimberlite field
- Southern central Finland
- Drill ready targets
- With the exception of the underlying royalty (which can be paid in cash or physical diamonds) Mantle has the full marketing rights to all diamonds recovered from the claims.
Mali
- Right to earn 75% beneficial interest in the Narena ATE
- Right to earn 80% beneficial interest in the Sored Exploration Licence
- Located in the Bougouni – Sikasso region of SW Mali
- Extensive aeromagnetic anomalies with kimberlite indicator minerals recovered during deflation / loam sampling of these anomalies
- Full marketing rights to all diamonds recovered from both the Narena and Sored projects
Liberia
The company has registered a local subsidiary in Monrovia and has applied for 2 x 200 km² diamond exploration licences.
Canada
Jen Claim
- Right to earn 80% beneficial interest in the projects
- Located just east of Yellowknife
- North West Territories of Canada
- Drill ready target
- Mantle retains full marketing rights to all diamonds produced from the project
Australia
Damper Creek Diamond project
- Right to earn 80% beneficial interest in the tenement
- Located in the central Kimberley region of Western Australia
- Drill ready target
- Mantle retains full marketing rights to all diamonds produced from the project

Finland
Canada (NWT)
Mali
Liberia
- evaluating projects in Angola, Russia, Australia, DRC, CAR and Guinea
| Lester Kemp | Managing Director |
| Mike Brennan | Technical & Operations Director |
| Cameron Pearce | Finance Director |
| Rupert Baring | Director |
| Non-Executives: | |
| A. James Macdonald | |
| B. Caspar Fithen |
Company Address3rd Floor
|
Capital16 million shares (10 million held by management and locked) |
| Management | 62.5% |
| Private Investors | 37.5% |