Professional and minimalistic image of three samples of curcumin powder arranged horizontally, one on top of the other, without any gaps between them. The texture should be realistic, starting with a rich transparent consistency at the beginning and gradually fading until it becomes almost invisible at the end, creating a smooth transition. Subtle shadows should be present to give them depth, giving the impression that they are applied to a smooth surface of neutral color. The end result should be minimal, etheral and light grey background and professional, without harsh textures