A large, weighty tome, about twelve inches square and several thick, bound between heavy oak boards and wrapped in tooled leather. Some eighty sheets of calf-skin vellum are sewn into the spine in carefully ordered signatures, often edged in painted borders or rubricated capitals. Brass or bronze corners, clasps, and sometimes a central boss protect the cover; finer examples bear stamped arms, inlaid motifs, or gold leaf on the spine. A grimoire is as much a piece of art as a vessel of information—a statement of the maker’s craft and the owner’s station.
Grimoires house the kinds of knowledge meant to outlast the hand that wrote them: spell formulae, herbal and alchemical catalogs, heraldic rolls, temple scripture, legal copybooks, genealogies, and libraries of correspondence. They live on lecterns and in locked presses, in scriptoria, sanctuaries, guild halls, and private libraries—places where light, warmth, and dryness can be controlled. Vellum endures centuries when kept so, and a well-bound grimoire can pass through many owners without losing a leaf.
Few grimoires are ever meant for the road. At eighteen pounds, one is a burden to carry; the boards warp if pressed damp, the clasps corrode, and a single drenching can ruin years of work. Spell grimoires in particular are almost never used in the field without extraordinary wards, sealed cases, or magical preservation—and even these precautions are expensive enough that most mages prefer to commit working formulae to a lesser book and leave the grimoire at home. The value listed reflects only the materials and the binder’s labor. What is written on the pages—spells, formulae, records, art—may be worth a hundredfold or a thousandfold more, depending on rarity and demand.