Students pursuing the Coloured Stone Professional (CSP) Diploma at Gemological Science International (GSI) recently embarked on a field expedition to Sri Lanka’s famed Rakwana Gem Deposit—an experience designed to bring classroom lessons to life.
The educational visit offered participants an immersive look into the coloured gemstone value chain, tracing each stage from mining and sorting to heat treatment and trade. “Such experiences are vital for shaping professionals who not only understand the science behind gemstones but also appreciate the effort and ethics involved in their journey,” shared Ramit Kapur, Managing Director, GSI India.
At Rakwana in the Ratnapura District, the group explored mechanised mining sites located across agricultural lands where sapphires, spinel, chrysoberyl, and tourmaline are sourced. Students closely observed how local miners manually sort gravel to identify gem-bearing material—a practice that has been passed down for generations.
They further visited the Karawita Mining Area, witnessed the traditional Geuda sapphire heat-treatment process, and explored gem trading hubs in Ratnapura and Beruwala. A highlight of the trip was a hands-on demonstration at the Beruwala Gem Cutting Workshop, where students learned how precision cutting enhances a gemstone’s lustre and value.
According to Meenu Vyas, Chief Global Gemologist & Head, GSI Education Centre, “Classroom learning builds the foundation, but witnessing gemstone formation and transformation firsthand provides a deeper, more meaningful understanding.”
The CSP Diploma, conducted at GSI’s Jaipur centre, integrates theoretical knowledge with practical exposure through mine visits, workshops, and lab sessions. By bridging scientific education with industry reality, GSI continues to nurture the next generation of gemmologists equipped with both technical skill and ethical awareness.