Gemological Science International (GSI) said that Jonathan Tack will join the organisation as Executive Vice President of Business Development. He has over 25 years of experience in the luxury goods sector. Following a decade of service as Vice President of Sales for Suberi Brothers where he revamped the legacy brand and launched e-commerce, Tack then founded Proposition Love where he designed for celebrities like Cher, Kathy Griffin, and Tori Spelling and even appeared on the Chelsea Handler Show.
Debbie Azar, President and Co-Founder of GSI, said, “Our team is made up of leaders from the diamond and jewellery industry, and I am confident that Jonathan’s enthusiasm, energy, and vast industry knowledge will help GSI achieve continued growth and success.”
Tack has successfully guided cross-functional teams while launching products into new markets, developing business strategies for multi-channel sales, and fostering lucrative partnerships. “I am delighted to join such an esteemed and prestigious global organization. The GSI team is building consumer trust and confidence in our industry through its integrity and innovation. I look forward to creating new opportunities that will be beneficial for GSI and for the entire diamond and fine jewellery industry,” Tack noted.