Create a hyper-realistic digital painting depicting a cosmic forest growing within a giant sapphire for the cinematic double-exposure portrait poster seamless blend, with overlay text at the top 'Check Comment for Prompt' and at the bottom 'aisuperhub.io'. A massive, impossibly translucent sapphire gemstone acts as a self-contained world. Within its multifaceted depths, a miniature, vibrant forest thrives, complete with glowing celestial flora and tiny, winding rivers of stardust. The forest canopy mirrors the gemstone's facets, creating an illusion of infinite, crystalline layers. Details to include: intricate bioluminescent fungi clinging to crystal tree trunks; miniature constellations shimmering within the sapphire's water features; a microscopic nebula swirling gently in the background; tiny, ethereal wisps of cosmic mist drifting between the trees; a faint, almost invisible, alien creature peeking from behind a luminous leaf. The sapphire itself is partially submerged in an otherworldly, liquid-like void, its surface reflecting distant, nebular light sources. The surrounding space is dark and infinite, emphasizing the precious, contained ecosystem within the gem. Hints of ancient, eroded, fantastical rock formations can be seen barely visible beyond the sapphire's immediate vicinity, suggesting an even larger, unseen world. Ethereal, soft internal glow emanating from the cosmic flora and water features, contrasting with deep, inky shadows that emphasize the sapphire's depth and contours. A gentle, diffused luminescence from unseen distant stars casts a subtle, silvery sheen on the gem's exterior, evoking a sense of tranquil mystery and wonder. Color palette: Deep sapphire blues, vibrant cosmic purples, glowing emeralds and teals, with delicate accents of shimmering gold, silver, and stardust white. Mood/atmosphere: Mystical, serene, breathtaking, and infinitely precious. Style summary: Hyper-detailed photorealism, epic fantasy art, cosmic surrealism, volumetric lighting, unreal engine 5, octane render, 8k, ultra-sharp focus, ethereal, transcendental, impossibly detailed, masterpiece.