subdermal LED necklace, glowing golden light pattern beneath the skin, (embedded LEDs:1.6) mimicking a gold chain, sapphire-like LED glow at the center, soft golden light radiating from under the skin, (subdermal sapphire glow:1.5) shining vividly, seamless under-skin jewelry effect, high-definition, (natural skin tone:1.4), flawless complexion, radiant blue light at the center of the subdermal necklace, (golden LED accents:1.3) forming necklace pattern, soft, natural glow, ultra-realistic textures, elegant subdermal jewelry design, futuristic yet subtle, glowing sapphire effect from embedded LEDs, modern tech-infused beauty, (delicate light reflections:1.5), high-resolution, subdermal lighting enhancing natural beauty, advanced LED technology