PRECIOUS ROOM by Muriel Piaser . The future of trade shows is phygital – an interview with Muriel Piaser Interview with founder of “PRECIOUS ROOM by Muriel Piaser” on her new jewelry trade show, merging physical and digital experiences – a new phygital trend. Precious Room by Muriel Piaser, the place to be! Precious Room by Muriel Piaser is the B to B jewellery fair you should definitely attend during Haute Couture Week to get noticed by worldwide buyers.