The Gemological Science International (GSI) has named luxury industry expert Jonathan Tack as executive vice president to oversee business development strategies.

Tack has over 25 years of experience in the luxury goods sector where he handled multifaceted projects involving ecommerce, sales and marketing, and design, to name a few. 

“Throughout his career, Jonathan has successfully guided cross-functional teams while launching products into new markets, developing business strategies for multi-channel sales, and fostering lucrative partnerships,” noted GSI. 

GSI specialises in grading reports and services for diamonds (both natural and lab-grown), coloured gemstones, and jewellery. It also offers a variety of educational programmes.