Philosopher's Stone in Sand Dunes - Concept Art

An expansive desert landscape of rolling golden sand dunes at golden-hour, a glowing Philosopher's Stone perched on the crest of a dune. The stone is a luminous, iridescent crimson gem, facet-cut, levitating slightly above the sand with faint halos and alchemical sigils shimmering on its surface. Wind sweeps around it, forming patterns in the sand and translucent mandala-like shapes. The scene is rendered as concept art for a fantasy world: painterly digital art with high detail, cinematic lighting, dramatic long shadows, and heat haze in the distance. The color palette combines warm ambers and copper with cool teal glow from the sigils. In the background, distant ruin silhouettes and a hazy mirage on the horizon, to convey scale. A lone traveler silhouette can be seen far away for perspective. The style is epic, atmospheric, and otherworldly, with textures of fine sand, wind-swept dunes, and crystalline reflections. The image should feel like concept art for a fantasy game or movie.