The diamond is .36 carats, with H color SI1 clarity. It is bezel set stationary at the center of a 1mm solid 14K yellow gold  link chain. The diamond is natural and untreated. It measures 5x4mm from the outside of the bezel. Custom adjustments or requests can be made. Marked 14K Classic 14k Gold Oval Solitaire Necklace, Classic Oval Solitaire Necklace With Bezel Setting, Gold Oval Diamond Necklace With Single Diamond, Yellow Gold Oval Pendant Solitaire Necklace For Anniversary, Oval Yellow Gold Solitaire Necklace With Single Diamond, 14k Gold Oval Diamond Necklace With Single Cut Diamonds, Oval Diamond Necklace With Bezel Setting, Gold Oval Solitaire Necklace With Diamond Cut, Classic Oval Solitaire Necklace In 14k Gold