Havas Media has won Swarovski's global media account in a competitive pitch against rivals, including incumbent Zenith.
The crystal jewellery brand’s account covers over 35 countries, including India.
America, China and the UK are its three top markets and other key territories are Italy, France, Germany, Hong Kong, Korea, Australia, Canada, Spain, Mexico and Brazil.
Havas Media said it will handle "the full range of media including social and programmatic".
Annual billings are undisclosed but the jewellery business has expanded rapidly and doubled its geographical spread since Zenith won the global account as part of a consolidation in 18 countries in 2008, when media spend was estimated at only €22m.
Privately-owned Swarovski has revenues of over €3bn (£2.5bn) a year.
Dominique Delport, global managing director of Havas Media Group, claimed the agency group has "a shared vision and passion" with Swarovski.
"We have a mutual focus on digital transformation," Delport said. "We know how important it is to keep the value that Swarovski has built up since 1895, but to also keep moving forward so that Swarovski can continue to design and deliver for the future."
Alessandro Vergano, senior vice-president of branding, communication and media at Swarovski, thanked Zenith for its "great work" over the last nine years. Havas Media takes over in January.
He said: "We are confident that we have found the right partner to deliver strategic support, operational set-up and digital transformation."
(This article first appeared on CampaignLive.co.uk. With inputs from CampaignIndia.in)