Colleges in India offering the Diploma in Law with different specializations are provided below-

SLS Pune - Symbiosis Law School

ILS Pune - Indian Law Society Law College

GLC Mumbai - Government Law College

New Law College Pune - Bharati Vidyapeeth Deemed University New Law College

University of Rajasthan, Jaipur

YCLC Pune - Yashwantrao Chavan Law College

Mar Gregorios College of Law, Nalanchira

DES Law College - DES Shri Navalmal Firodia Law College

MSU Baroda - Maharaja Sayajirao University of Baroda

KLE Society's Law College, Bangalore

NLU Kochi - National University of Advanced Legal Studies

UNIPUNE (Pune University) - Savitribai Phule Pune University

SCLC Pune - Marathwada Mitra Mandal’s Shankarrao Chavan Law College

For more colleges in India consider the link below:

https://law.careers360.com/colleges/list-of-diploma-law-colleges-in-india

I hope this helps. Wish you a great day!