I have for offer this vintage German swirl core sea washed glass marble, measuring 22cm in diameter. It's either a solid core or a onionskin and was found on the River Thames. This unique marble boasts a classic blue and white swirl, but has a textured surface having been sea washed. It also has a few chips, one being 8mm wide (pictured), but it has a charm just the way it is. Regards Finderskeeperskent.
