.85 Square Cut Emerald Engagement Ring in 14k White Gold. 85 Square Cut Emerald Engagement Ring in 14k White Gold. This very fine modern engagement ring features a . 85 carat square cut emerald set in 14 karat white gold with diamond accents. The emerald is flanked by baguette cut diamonds and further out there are small round brilliant cut diamonds. The emerald is set with four (4) prongs and sits above a highly polished white gold shank.