Own design and implementation. I used materials: lemon quartz, silver (925). The size of the central element: 1.6 cm, ring width 5 mm. Inner diameter: 18 cm. Jewelry size: 16. I made the ring using elements of jewelry techniques. Polished. The ring's eye is slightly movable. Attached for free - strap 50 cm with an 8 cm extension (silver chain) for possible use as a pendant.