Design a modern, elegant chair where the backrest features a halo of rose quartz crystals arranged in a circular, crown-like form, reminiscent of natural crystal clusters. The halo should appear to float behind the chair, with the quartz crystals radiating outward to create a dramatic, glowing effect. The chair frame should be minimalist, made from polished metal or matte black, allowing the quartz halo to be the central focus. The seat and armrests should be upholstered in soft, neutral-toned fabric or leather to maintain comfort while letting the crystalline halo be the statement element. Integrate subtle lighting behind the quartz to enhance its translucent qualities, making the chair both functional and a striking art piece