subdermal LED pendant necklace, (internal LED glow:1.7), (embedded LEDs:1.8) forming a radiant central light point beneath the skin at the base of the neck, (focused light radiating outward:1.7), soft glow mimicking the elegance of a gemstone pendant, (sapphire-like central glow:1.6), natural skin tone with subtle light diffusion, high-definition, (ultra-realistic skin texture:1.7), glowing light centered beneath the skin, (minimalist glowing accent:1.5), perfect for both formal and casual occasions, (worn jewelry:-1.8), (visible pendant:-1.8), (unnatural glow:-1.5), smooth, elegant light pattern radiating outward, seamless and refined