Nikos Koulis Oui collection ring with emerald cut white diamonds and black enamel ... cut center stone flanked with half-moons in 18k yellow gold, price upon request, k-kane.com.

If the Colombian emerald and emerald-cut diamond band weren't enough, delicate yellow gold prongs make this engagement ring utterly spectacular ... courtesy of two white diamond side stones ...

Angara Emerald Solitaire Ring, $13,869; Tiffany & Co. Yellow and White Diamond Ring, Price Upon Request; Yi Collection Aquamarine and Emerald Ring, $2,495; Catbird Garnet Ring, $3,900; Angara ...

In addition to making the fine jewelry celebrities like Taylor Swift, Emma Stone and Jennifer Lopez rock on the regular, VRAI ...

As exciting as it is to get engaged, finding the perfect engagement ring ... white the diamond is. The diamond color scale starts at D (completely colorless) and goes all the way down to Z (yellow).

Colored gems and signed jewels from important private collections led the way at Bonhams New York Jewels Sale held Thursday ...