Nikos Koulis pendant from the Oui Collection. Polished 18-karat white gold chain and hardware. Integrated diamond and black enamel pendant. Pav and emerald-cut diamonds at center. 0.25 total diamond ...
The most valuable emeralds are bluish-green to green and have a medium to medium-dark tone. Since emeralds typically form in six-sided prisms, they are naturally suited for, and often shaped into, the ...
A hand-held flashlight reveals the green color of a rough emerald from the Coscuez Emerald mine in Colombia. Photo by Eric Welch/GIA. Emerald is the green to bluish green variety of beryl, a mineral ...