The reputed international brands available at Giantti include Stefan Hafner, La Nouvelle Bague, Poratti, IOSI, Bliss, Greggio, Rosato, Calgaro, etc.

Giantti also houses high end Indian brands like Nizam, Parineeta, Nakshatra Eternity and the World of Solitaire among others

Source: http://www.expressindia.com/latest-news/Giantti-celebrates-its-brand-success-in-Delhi/648831/