Thakkar Pheru was a 14th century author of encyclopedic books on coins and gems in Delhi

Delhi

Delhi , officially National Capital Territory of Delhi , is the largest metropolis by area and the second-largest by population in India, next to Mumbai. It is the eighth largest metropolis in the world by population with 16,753,265 inhabitants in the Territory at the 2011 Census...

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Alauddin Khilji

Alauddin Khilji

Ali Gurshap Khan better known by his titular name as Sultan Ala-ud-din Khilji was the second ruler of the Turko-Afghan Khilji dynasty in India.He was a well and capable ruler. He belonged to the Afghanized Turkic tribe of the Khiljis...

 recruited Thakkar Pheru a Shrimal Jain

Shrimal Jain

Shrimal Jain is an ancient Jain community originally from the Shrimal or Bhinmal town in southern Rajasthan.They mainly reside in Rajasthan and Madhya Pradesh...

 from Kannauj

Kannauj

Kannauj , also spelt Kanauj, is a city, administrative headquarters and a municipal board or Nagar Palika Parishad in Kannauj district in the Indian state of Uttar Pradesh. The city's name is traditionally derived from the term Kanyakubja . Kannauj is an ancient city, in earlier times the capital...

 in Haryana

Haryana

Haryana is a state in India. Historically, it has been a part of the Kuru region in North India. The name Haryana is found mentioned in the 12th century AD by the apabhramsha writer Vibudh Shridhar . It is bordered by Punjab and Himachal Pradesh to the north, and by Rajasthan to the west and south...

 as a treasurer. He was an expert in coins, metals and gems. For the benefit of his son Hemapal, he wrote several books on related subjects including Dravya Prariksha on metals and various coins; and Ratna Pariksha

Ratna Pariksha

Ratna Pariksha is an ancient science on testing gemstones. This art was used by Kosadhyaksha mentioned in Kautilya's Arthashastra in order to control business of pearl, diamonds and all important gems in the ancient times...

 on various precious gems stones. He was continuously employed until the rule of Ghiasuddin Tughluq

Ghiyath al-Din Tughluq

Ghiyas ud-Din Tughluq , real name Ghazi Malik was the founder and first ruler of the Turkic Muslim Tughluq dynasty in India, who reigned over Sultanate of Delhi . He has been the founder of the third city of Delhi called Tughluqabad.Ghiyath al-Din Tughluq was in origin a poor Qarauna who took...

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