This is a replica of the One Ring made popular in The Lord of The Rings movie. It looks really cool to have the laser etching on the black tungsten. Since it is Tungsten Carbide it has a lasting shine.
The translation of the inscription is as follows:
On the outside of the band, “One Ring to rule them all, One Ring to find them”.
On the inside of the band, “One Ring to bring them all and in the darkness bind them”.