This is a custom designed black diamond engagement ring on a platinum band designed in the fall of 2021.  It was worn approximately 3 months and kept in the box since last worn.  This is a description provided by the rings designer:

Custom platinum and black and white diamond ring.  The center diamond is approximately 1.15ct and the side diamonds are approximately 0.15ct.  The black diamond is well cut and a pure black color, the side diamonds are graded SI1-SI2 (completely eye clean) in clarity and G-H (near colorless) in color.  If I had to rebuild the ring right now at current platinum and diamond prices you would be looking at about $2,200.