Add certain 'fragile' blocks to lootpools

As of now, certain blocks important to building are currently impossible to obtain or are permanently lost in realms when broken. One such example is the budding amethyst block. While you could argue amethyst is accessible through deep dark or geodes visible from the surface of an ocean, geodes already exist in realms. However, due to the nature of the blocks, it is very risky to mine or move them (as well as the amethyst around them) due to their ‘fragile’ status.