You can make GIANT CLAM by combining TREASURE CHEST and DEEP SAND. This item belongs to storage category. Growing GIANT CLAM takes 2d 01h 14m 56s Breaking GIANT CLAM gives you 12 experinece points per tree and block you brake. Hitting it will break it but you need to count the hits yourself. You get at least 1 seed back (maybe more!) from splicing GIANT CLAM. Gemratio of GIANT CLAM is a mystery. Maybe you can check the wiki for <a href="https://growtopia.fandom.com/wiki/Giant_Clam">giant clam</a> Will you get enough blocks to build something? You just have to find out yourself.