The blood-colored Evolution Crystal produced from the silver-armored zombie's body was extremely popular in the survivor's base, but the Evolution Crystal of the silver-armored zombie was not consumable by the new humans, otherwise, they would turn into silver-armored zombies.
The reason for the popularity of the blood-colored Evolution Crystal in human society wasn't just due to the difficulty in obtaining it compared to ordinary Evolution Crystals. The main reason was that it boosted the energy supply in weapons requiring anti-life matter by three to five times more than normal Evolution Crystals, and because of its uniqueness, it was the best material for memory metal, possessing toughness far beyond ordinary H steel.