Hello there I have a necklace that says 18c on a person side and 926 Italy to the other aspect it's a 20 inch necklace that appears being silver could possibly be white gold I am unable to locate information and facts anywhere please help thank you 12k gold is https://jewelry-box21851.blog4youth.com/23172626/an-unbiased-view-of-necklace-under-1000