I had my bench craft this ring using a 1.05ct oval-ish mine cut diamond I got out of an old broken ring, it is surrounded with 0.90ct old european cut diamonds. The center is approx J color with a small clear inclusion in the pavilion, completely eye clean and very bright, it looks amazing. The side diamonds are approx g-i vs quality.
The mouting is 18k and platinum, edwardian halo style, currently a size 6.75 and easily sizeable to almost any size. Ring faces 12.5mm by 12.3mm.