Signet Jewelers CEO explains why there's a market for both natural and lab-grown diamonds ○ found 2025 › Sep › 03 (Wed) @ 09:45 UTC a story from CNBC ⚠️ › Top News Signet ■■ Jewelers ■■ CEO ■■■ Symancyk ■■ CNBC ■■■ Jim Cramer ■■ preview sentiment