subdermal LED sapphire pendant, (internal LED glow:1. 6), (embedded LEDs:1. 7) forming a glowing sapphire- like point beneath the skin at the center of the collarbone, soft radiant light mimicking a gemstone beneath the skin, (sapphire- like glow:1. 5), iconic pendant design under the skin, natural skin tone with smooth light diffusion, (high- definition:1. 6), (ultra- realistic skin textures:1. 7), seamless integration of light beneath the skin, radiant sapphire effect, (worn jewelry:- 1. 8), (visible pendant:- 1. 8), (unnatural glow:- 1. 6), soft light transitions under the skin, modern tech beauty, elegant and versatile for both formal and casual settings