Create a small floating island for ...

Create a small floating island for Minecraft, with a circular but irregular shape, not perfectly uniform. The island must be completely flat on the top, with no structures, vegetation, or objects on it — an empty, clean surface intended for future building. The maximum diameter of the island must be no more than 150 blocks. The underside of the island should feel natural and eroded, with an organic rock formation that tapers downward, using layers and irregular geometry rather than a perfect cone. Use a mix of stone, andesite, deepslate, and subtle variations to create depth and realism, avoiding symmetry and artificial patterns. The island should appear to be suspended in the air, isolated, dramatic, and believable within a Minecraft survival or creative world. No fantasy decoration