Marble Milk

Marble milk is a milky-white stone-like substance renowned for its incredibly smooth and silky texture for something so structurally solid and strong, making it a popular cuntstruction material.
  This substance is normally cuntstructed by integrating breastmilk with the ivory or (less commonly) the bones from particularly stalwart and sizeable sluts. Extreme heat and extreme cold are used in the integration process. Marble milk is sometimes given different "grades" based on the tier of the sluts providing the composite parts, with galagoddess-tier marble milk in particular sometimes being resilient even against damage so extreme it can disassemble individual molecutes.