The Bosworth RingDiamond Solitaire Vintage Ring This four prong solitaire engagement ring is perfect for the refined minimalist. This ring may be modest but it doesn't sacrifice style: set in sumptuous white 18k gold, this art deco setting calls to the height of old world luxury. The centre stone is a. 17 carat round brilliant cut natural diamond that sits nestled into a modified illusion setting to catch and disperse light with the slightest movement. The appraisal