18" solid 14k white gold chain (availible in other lengths) holds a pendant of most excellent proportions. The halo of 27 full cut modern round brilliant diamonds G-H in color Si1-Vs2 in clarity in a hand fabricated 14k white gold setting are set with incredibly tight tolerances to each other. The halo of brilliant white sparkles highlights a natural violet sapphire that changes color from blue to purple depending on the light. The proportions of the halo to the sapphire setting are held very close to the golden ratio. Basically every part of this necklace is magical.