Select Page


Geologic, Environmental, and Mining Services Company Ltd (GEMS), is a U.S. Company with a presence in the United Kingdom. GEMS is staffed by senior professionals with U.S. and international experience in mineral resource assessment, mine feasibility studies, and mine development.

Our expertise and depth of experience allows us to quickly assess the needs of our clients and the challenges they are facing, and deliver cost effective and timely solutions.  Our ability to see the “big picture” and a thorough understanding of regulatory requirements and natural environment, allows us to quickly identify, assess, and address key issues that could impact the success for our client’s objectives. The GEMS team has a broad range of experience; however, if necessary we have ready access our network of highly skilled independent professionals to achieve the task at hand.

In addition to providing consultancy to the mining sector, GEMS also provides brokerage services for exploration prospects and mining properties. Depending upon client interests, GEMS has access properties in northern Nevada, South America, and eastern and southern Africa that are available for acquisition and development.


The expertise of our professionals covers a wide range of services related to geological and environmental sciences, along with acquisitions and mergers in the mining sector. Specific expertise includes:

Exploration and Mineral Evaluation Services

  • Design, management, and execution of exploration projects
  • Strategic planning and target development
  • Design and audit of exploration protocols
  • Establishment and management of databases
  • Country and region-wide economic mineral reviews and assessments
  • Tectonic and structural geology assessment
  • CPR Oversight
  • Resource qualification and classification (JORC, CIM, NI 43-101)

Pre-Feasibility Studies, Feasibility Studies, and Mine Development

  • Qualified persons for technical reports and compliance documents
  • Due diligence 3rd party review
  • Resource modeling
  • Resource of reserve estimation
  • Metallurgical analyses
  • Open-Pit and underground optimization
  • PEA, techno-economic modeling
  • Cost/benefit analyses
  • Technical and financial feasibility analyses
  • Development and startup cost modeling

Other Services

  • International law and regulations compliance
  • Contract review, negotiations and management (investment, acquisitions, sale and other transactions)
  • Mergers and acquisitions advisory services
  • Geologic Hazard Assessment
  • Water well installation

Environmental Services

  • Baseline and scoping studies
  • Environmental impact assessments
  • Permitting and compliance
  • Environmental monitoring and management
  • Waste minimization/management
  • Ground water modeling

Representative Projects

  • Busitema Gold Mine, Uganda
  • Evaluation of Selected Gold Mines in Zimbabwe
  • Violin Gold Mine, Colombia
  • Feasibility studies of rare metal deposits of Alto Lighonia Pegmatite Field in Mozambique
  • Chloride Copper Prospect, Arizona
  • Johnson Camp Copper Mine, Arizona
  • Evaluation of the Poracota Gold Mine, Peru
  • Evaluation of Gold-Platinum deposits in the Choco of Colombia
  • Exploration, evaluation, and development of the tin deposits in Pahang and Perak States, Malaysia
  • Monarch Gold Mine, Zimbabwe
  • Exploration and Evaluation of Mae Sot Zinc deposits of Thailand
  • Evaluation of the Barreras manganese-Thallium deposits of Brazil
  • Evaluation of the Eastern Platinum deposits of South Africa
  • Preliminary assessments of gold prospects in Idaho, Indiana, Colombia, Ecuador, Nevada, Wyoming, Peru, Costa Rica, Nicaragua, Liberia, Sierra Leon, and Nigeria for private investors.