Which ring is the closest to the one in the movie LOTR?

The original ring used in the movies was solid 18 ct yellow gold and completely unmarked. You can have use recreate this for you by ordering this ring in 18 ct yellow gold without any hallmarks https://www.jenshansen.com/collections/movie-rings/products/yellow-gold-movie-ring All of our Movie Rings are available up to 22ct. If you do not find the option to select the 22ct then please provide us your contact details (name and email id), our team will get back to you shortly and assist :)