Lab-Grown Alexandrite & Diamond Halo Necklace (0.05 ctw)

A round lab-grown alexandrite circled by a full diamond halo, which is the setting that does the most for a color-change stone: the ring of small diamonds frames the hue and makes the center read a size larger than it measures. Alexandrite shifts with the light, blue-green by day and purple-red under a warm bulb, and the white halo keeps that shift easy to see. It hangs at 16 inches, high on the collarbone, where the color is quick to notice. White gold sharpens the stone, yellow gold leans into the green, rose lands warm in between, and platinum is the version for anyone who never wants to re-plate. It arrives in a gift box, ready to give.