Ratnapura (Sinhala: රත්නපුර; Tamil: இரத்தினபுரி) ("City of Gems" in Sinhala and Tamil) is a major city in Sri Lanka. It is the capital city of Sabaragamuwa Province, as well as the Ratnapura District, and is a traditional centre for the Sri Lankan gem trade. It is located on the Kalu Ganga (Black River) in south-central Sri Lanka, some 101 km southeast of the country's capital, Colombo. Ratnapura is also spelled as Rathnapura.