I had a turquoise placed in the center of the sun god custom-made. The black around the sun god is not tarnish, but an oxidized finish. I have done some basic polishing, but it would shine even more if you had it professionally cleaned. There are no accessories such as a box. Material: SLV925 × K18 × Turquoise SIZE (approx.): Width 6mm (center) - 8mm (tail) × Thickness 1.8mm × Inner diameter 165mm (including opening)