exquisite close-up of a sparkling cushion-cut sphalerite gemstone in vibrant amber and citrus hues

gemstone sphalerite amber citrus vibrant sparkle closeup jewelry mineral luxury precious crystal faceted cushioncut gemology clarity brilliance elegance ornament decorative translucent vivid radiant fiery polished rarity investment beauty refractive unique collector gem jewel bright reflection artisan craftsmanship opulent allure treasure fine quality glossy shine lavish natural cut detail ai generated