The One Ring was forged by the Dark Lord Sauron during the Second Age to gain dominion over the free peoples of Middle-earth. In disguise as Annatar, or "Lord of Gifts", he aided the Elven smiths of Eregion and their leader Celebrimbor in the making of the Rings of Power.

Did Celebrimbor make the One Ring?

After the Elves had lived in Eregion for some time, Sauron came to them. ... With Sauron's help, Celebrimbor forged the Rings of Power: three for the Elves, seven for the Dwarves, and nine for men. Sauron's goal was to control all of the Rings, which is why he forged the One Ring.

Who has the original one ring?

Jens Hansen Jewelry still has the One Ring.