The Backstory: At TGMS 2025, David Smith (Faceters Paradise) talked with Mark Oros (Hashnu Stones & Gems) about his prominent display case situated on the main floor at the Show. Mark describes the genesis and results of his "One Year Quartz Challenge" - with the goal to emphasize dispersion and scintillation - and the key pieces of equipment he uses to achieve the fabulous results. See the Video
