Meghan Markle has unveiled yet another transformation of her iconic engagement ring ... featured a 3-carat cushion-cut diamond from Botswana, flanked by two diamonds from Princess Diana's collection.

"A row of 46 diamonds is set along the perimeter of the ring top. Completing the top and bottom edges of the ring are 8 princess-cut sapphires. An additional 108 diamonds cascade from the ring top ...

A row of 46 diamonds is set along the perimeter of the ring top. Completing the top and bottom edges of the ring are eight princess-cut sapphires. An additional 108 diamonds cascade from the ring ...