Nine Ratans was navratna's i.e. nine gems, they are as follows -
Abu'l-Fazl ibn Mubarak - Historian
Faizi - Poet
Tansen - Musician
Birbal - court jester
Raja Todar Mal - Finance Minister
Raja Man Singh I - Warrior, General
Abdul Rahim Khan-I-Khana - General and Teacher
Fakir Aziao-Din - Suifi
Mulla Do-Piyaza - Intelligence Officer
Abul Fazal (Abu'l-Fazl ibn Mubarak) Abul Fazl was the chronicler of Akbarnama in three volumes over seven years, the third volume is known as the Ain-i-Akbari.
Faizi Faizi was Abul Fazl’s brother, the poet laureat of Akbar. The name of father of Abul Fazal and Faizi was Mubarak Nagori, a scholar in the philosophy and literature of Greece as well as in Islamic theology.
Tansen (Miyan Tansen) Miyan Tansen was born as Tanna Mishra, in 1520. He was a disciple of Swami Haridas and later became disciple of Hazrat Muhammad Ghaus (Gwalior ). He was a court musician with the prince of Mewar and later was recruited by Akbar as his court musician.
Birbal or Raja Birbal Raja Birbal, a poor Hindu Brahmin Maheshdas was appointed to the court of Akbar for his intelligence, and became the court jester. The name Raja Birbal was given by the Emperor. Birbal’s duties in Akbar’s court were mostly military and administrative.
Raja Todar Mal Raja Todar Mal, a Hindu Khatri was Akbar’s finance minister, who from 1560 onwards overhauled the revenue system in the kingdom.
Raja Man Singh Raja Man Singh, the prince of Amber was a trusted general in Akbar’s army and was the grandson of Akbar’s father-in-law Bharmal.He was also the Mughal viceroy of Afghanistan, led campaigns in Bihar, Orissa, Deccan and was also the viceroy of Bengal.
Abdul Rahim Khan-I-Khana Abdul Rahim Khan-I-Khana, son of Akbar’s trusted general and tutor. Best known for his Hindi couplets.
Fakir Aziao-Din Fakir Aziao-Din Fakir Aziao-Din was a sufi mystic, and an adviser.
Mullah Do Piaza Mullah Do Piaza, an intelligence adviser to Akbar.