People visit FACETS Sri Lanka 2025, an international gem and jewellery exhibition, in Colombo, Sri Lanka, Jan. 4, 2025. The exhibition opened here Saturday. (Photo by Gayan Sameera/Xinhua)

A man checks a gemstone on display during FACETS Sri Lanka 2025, an international gem and jewellery exhibition, in Colombo, Sri Lanka, Jan. 4, 2025. The exhibition opened here Saturday. (Photo by Gayan Sameera/Xinhua)

This photo shows a gemstone on display during FACETS Sri Lanka 2025, an international gem and jewellery exhibition, in Colombo, Sri Lanka, Jan. 4, 2025. The exhibition opened here Saturday. (Photo by Gayan Sameera/Xinhua)

A man checks a gemstone on display during FACETS Sri Lanka 2025, an international gem and jewellery exhibition, in Colombo, Sri Lanka, Jan. 4, 2025. The exhibition opened here Saturday. (Photo by Gayan Sameera/Xinhua)