It was made by combining a crimson charm with 166 spirit shards and Granite (500g). This required 74 Summoning and gave no experience. The unfinished pouch could then be infused at a summoning obelisk to make the Granite lobster pouch, giving 325.6 Summoning experience. Any leftover uncharged pouches may still be converted in experience. Clicking one in your inventory prompts a warning message saying: "this item no longer has use. Convert it and claim the xp contained within?". Choosing 'Yes' will convert all pouches in your inventory into 325.6 summoning experience each.