Antique Victorian Jet Mourning Ring. Unmarked but Tested 14K Yellow Gold and Silver The Black material is most likely Jet. The stone in the middle tested as diamond but by looking at it I’m not 100% sure. It looks like a gold frame was put in the jet and the stone was glued. 1.5cm x 1cm – front of the ring. Considering the age Good vintage condition could use some cleaning and polishing. Please view all photos as they are part of the description. Check out my store for more interesting items. Pet Free Smoke Free Home. The item “Antique Victorian 14K Yellow Gold Silver Diamond Jet Mourning Ring sz 9″ is in sale since Monday, March 25, 2019. This item is in the category “Jewelry & Watches\Vintage & Antique Jewelry\Fine\Victorian, Edwardian 1837-1910\Mourning Jewelry”. The seller is “world-of-style” and is located in Westfield, New Jersey. This item can be shipped to United States, Canada, United Kingdom.