ZT Wealth, a Houston-based wealth management firm with about $250 million in assets under management, has launched a new unit aimed at serving clients with $5 million or more in wealth.

The Sapphire Group, with a team of five advisors in the Galleria area of Houston, will focus on comprehensive services for high-net-worth clients, including estate and tax planning, and business owner succession, said Taseer Badar, co-founder and CEO of ZT Wealth.

Badar estimated that about 80 of ZT Wealth's 250 clients will be served by Sapphire. About 80% of ZT Wealth's clients are physicians and dentists.

"It's designed to be a comprehensive, white-glove type of service," said Badar, who co-founded ZT Wealth in 1997.