Sterling silver two tone, softest lavender gem necklace/pierced earrings duo

This stunning modernistic subtle two tone jewelry duo is in excellent pre owned condition. The 18 inch necklace is highlighted by a striking sterling silver/gold tone multi gem central feature attached to the sterling rounded snake chain. The sparkling gems are palest tanzanite? alexandrite? As shown in the pictures, the gems exhibit color change according to the time of day and light conditions. The pierced earrings display the same gems in sterling/gold tone coils with a lovely pendant gem on each earring. There are no missing gemstones anywhere on the necklace or earrings though in some photos a few gemstones appear more deeply recessed.