Create a minimalist scientific poster featuring the chemical element Magnesium (Mg) with atomic number 12. The background should have a smooth gradient from deep purple (top) to dark violet (bottom). Center the symbol 'Mg' in large, bold, white sans-serif font. Place the atomic number '12' in smaller white font at the top left of the Mg symbol, and underneath the symbol, write the electron configuration '[Ne]3s²' in a small, semi-transparent white font. Outline the Mg symbol with a thin, angular, white geometric frame. To the right of the Mg symbol, render a 3D low-poly crystal formation in light purple and lavender tones, with a faceted texture and subtle transparency. At the top center, add the text 'The Longevity' in small, white, thin sans-serif font, and at the bottom center, place the text 'Mineral Essential.' in a larger white sans-serif font. Ensure the overall design is sleek, clean, and minimalistic with scientific and geometric elements."