TriJewels Black Diamond Round Shape Solitaire Ring 4.00 ct in 14K Yellow Gold 4.00 ct Treated Black Round Diamond Solitaire Ring in 14K Yellow Gold. 1 Treated Black Round Diamond set using Prong Setting. Gemstones may have been Treated to Improve their Appearance or Durability & may Require Special Care. The Natural Properties & Composition of Mined Gemstones define the Unique Beauty of each Piece. The Image may show Slight Differences to the Actual Stone in Color & Texture. All our Diamonds to our Best Knowledge are not Conflict Diamonds