Do not invent meaning from the gemstone to make the outfit work. Color, scale, placement, and personal preference are enough. David Kibbe's official site presents style as a head to toe image centered on the individual person. Treat this checklist as an experiment with the complete outfit, not a rule about who is allowed to wear amethyst. Your own taste decides whether the final result feels worth repeating.
Edit detail around the face
Count the active details from the shoulders up. Include a contrast collar, earrings, glasses, hair accessory, lip color, and the necklace. If several pieces demand attention at once, keep the two or three that make the clearest rhythm and quiet the rest.
For example, pair the pendant with small rounded studs and a crisp collar, then leave the hair accessory out. In another outfit, use the pendant with a curved hair clip and no earrings. These edits preserve animation while giving each detail breathing room.
If the necklace still disappears, do not automatically add another chain. Layering can create useful rhythm, but it can also turn a clear stone into one more fragment. First increase the neckline contrast or remove a competing detail. Add a second chain only when it creates distinct spacing and leaves the amethyst easy to locate.