Mr Dayananda Dillimuni is the consultant gemmologist and the sole proprietor of the Allied Gemmological Institute & Laboratory. He obtained his German (DGemG) and British (FGA of Gem-A) qualifications in gemmology in 1978 after his graduation from the Institute of the German Gemmological Association in Idar-Oberstein, Germany.
Returning to Sri Lanka, he attended to several activities in the gem industry, including in setting up of a modern lapidary under the government FIAC programme. Stepping out of these activities, he commenced to concentrate in teaching of gemmology. First he failed to obtain a permanent working place at the State Gem Corporation but later he was called to serve as a visiting lecturer in1984 at the same institution. When the research and Training division of the State Gem Corporation was established as a separate body under the name of Gem & Jewellery Research & Training Institute, he served as a visiting lecturer in several terms.
His teaching activities in training of students for gemmology courses of the Gemmological Association of Great Britain was commenced in 1989. In 1994 he was invited to teach gemmology as a visiting lecturer for the Certificate Course in Gemmology at the University of Moratuwa, in Sri Lanka, and he has been teaching in that capacity upto 2018 .
In 1987 when MSc Programmes in Gemmology was introduced at the Postgraduate Institute of Science in University of Peradeniya, Sri Lanka, he was enrolled into the teaching panel and since then he continued as the visiting lecturer until 2012. He had to give up the offer by PGIS to continue with the change of the selecting scheme of the students to follow the programme by depriving even highly experienced and qualified gemmologists accredited to international gemological organizations, due lack of a degree from a university.
In 01.07.1999 he received the Allied Teaching Centre status in Sri Lanka, to conduct teaching courses of the Gem-A (the Gemmological Association of Great Britain) and commenced direct official contract to carry out teaching activities for Foundation and Diploma courses of this organization. In 08.12.1999 Allied Gemmological Institute and Laboratory (AGIL) was established under his sole proprietorship in order to carry out teaching courses in gemmology and also for gemstone testing and issuance of laboratory testing reports. AGIL is also registered as the teaching centre to conduct Foundation and Diploma Courses of Gem-A under the Tertiary and Vocational Education Commission of Sri Lanka with effect from 23.04.2014.
Mr. Amarasinghe has obtained qualifications as a gemmologist with international recognition and accreditation by obtaining the FGA (UK) title from Gem-A in 1999. In year 2000 he entered London Guildhall University in United Kingdom and followed the Gem Diamond Diploma and earned the DGA (UK) title in 2001.
Mr. Amarasinghe has followed the Certificate Course in Gemmology at University of Moratuwa, Sri Lanka in year 1997 and also several other training programmes related to gemstone industry at National Gem & Jewellary Authority and the Export Development Board of Sri Lanka.
He pioneered in setting up of the Gemmological Institute of Colombo (Pvt.) Ltd in year 2005 and currently serving as the consultant gemmologist of the GIC GemLab. He has undergone special laboratory procedures and analytical testing of gemstones in Japan-Germany Gemmological Laboratory (JGGL) - Japan in 2005, and analytical methods in Gemmology - AIGS Thailand.
He also has served as a visiting lecturer in gemmology at National Gem & Jewellery Authority, National Technical College and also Department of Integrated design, of the University of Moratuwa, Sri Lanka.
Recently he received the appointment by the Gem-A as an ATC Tutor in Sri Lanka to conduct lectures at the Allied Gemmological Institute and Laboratory (AGIL), Colombo. He continues to teach gemmology as a visiting lecturer for the Foundation and Diploma courses in Gemmology of Gem-A at AGIL, Colombo, in collaboration with Dayananda Dillimuni.
Mr. Amarasinghe holds a bachelors degree in Business administration (BBA) and a Masters degree in Business administration (MBA) from the United Kingdom and is also a life member of the Gemmologists Association of Sri Lanka with the MGA (SL) title.