Haven Bag Gems are used to increase the size of your Haven Bag. Haven Bag Gems are placed on the Gem console within your Haven Bag. You have a 3-by-3 grid, and each section can contain up to 2 of the same Gem-type (you cannot have 2 different Gems in the same section). A single gem will add a 4*4-sized room, two gems in the same section will make a 5*5 room. If you place 5*5 rooms of the same type next to each other, the gap between them will be filled in, granting you even more space. All Haven Bags start with one Merchant Haven-Gem for free, which cannot be moved or removed.