A springring clasp is a flat, circular disc with a recessed gate. It adds no appreciable bulk to a necklace or bracelet and sits flush against the skin, which is why designers reach for it when creating a clean, uninterrupted line.
Elemental Detail
Pure gold does not oxidize, and 10kt yellow gold contains enough of it that the yellow tone holds up under normal wearing conditions without tarnishing.
Stone Story
Fine ruby fluoresces; chromium causes the stone to glow with internal red fire under daylight and UV, adding luminosity. That fluorescent warmth is part of what makes top-quality ruby look alive.