This is a polished stone egg with soothing blue and green marbled tones, likely crafted from dyed quartz, aventurine, or similar semi-precious stone. The glossy finish highlights natural veins and subtle color gradients, creating a tranquil, oceanic look. Stone eggs like this are favored for display, as paperweights, in crystal collections, or for metaphysical uses such as energy balancing and meditation. Each one is unique—nature’s art, shaped and polished by hand.