Emenike Olumba Aka
Diamond Valuator
Aka is a Nigerian-born expert in the extractive sector who currently lives and works in Sierra Leone, where he serves as the General Manager and Chief Diamond Valuator at our diamond mining company. With a dynamic blend of technical expertise, leadership acumen, and entrepreneurial vision, Aka is the driving force behind our operations in Sierra Leone.
He oversees the entire value chain—from field exploration and mining logistics to valuation, compliance, and export—ensuring the company operates with efficiency, transparency, and integrity. As the company’s certified diamond valuator, Aka applies his precision and deep understanding of gemological standards to ensure every stone meets the highest quality benchmarks before reaching the global market.
His professional credentials include two prestigious certifications from the Gemological Institute of America (GIA) Carlsbad: Diamond Essentials and Diamond and Diamond Grading. These globally recognized qualifications reinforce his ability to accurately assess and manage the quality of our rough stones using the 4Cs- Cut, Colour, Carat weight and Clariy giving our clients and partners confidence in every transaction.
Known for his hands-on management style, Aka leads with purpose—empowering local workers, championing sustainable mining practices, and fostering long-term relationships with both local communities and international stakeholders. His commitment to ethical sourcing and operational excellence continues to position our company as a respected name