L Gluck Gemology

Diamond sourcing doesn’t get more precise than L Gluck Gemology. Specialists here handle everything from loose-stone selection and GIA certification to custom mounting and secure appraisals—all within the same Midtown office. The address, 580 5th Ave #1915, places them steps from the Diamond District’s hustle, yet the suite feels removed from the sidewalk scrum; a quiet corner for serious buyers.

Fifth Avenue’s jewelry trade has thrived for generations, and this dealer fits neatly into its rhythm without fanfare. A quick call to (917) 334-1560 can set an appointment, and the map confirms the elevator ride up is worth the trip. Bring your questions, leave with a stone that’s exactly what you asked for.