(IDEX Online) – Hong Kong-based jewelry giant Chow Tai Fook has launched a new diamond jewelry collection called "Touch" featuring its '4Ts' concept.

The 4Ts stand for Traceable, Transparent, Truthful and Thoughtful, with each Chow Tai Fook T Mark diamond inscribed using the firm's own patented technology.

"The marking, essentially a set of unique serial numbers, traces the journey of each stone from sourcing to production, and representing a trustworthy promise of sincerity, faith and belief," the jewelry company said.