Blessed Bone Shard Calculator

Each blessed bone shard gives 5 Prayer XP when sacrificed with a jug of blessed wine, or 6 Prayer XP with a jug of blessed sunfire wine, a 20% increase. This rate is the same for every bone type. The bone type you choose only changes how many shards you get per bone and what that bone costs, not the XP per shard itself.

Each piece of Zealot's robes gives a 1.25% chance, per individual shard sacrificed, that the shard isn't consumed while you still receive full XP for that action. Wearing the full four-piece set gives a combined 5% preservation chance. This calculator models it as a true expected-value process, since preserved shards let you perform more sacrifice actions than the number of shards you actually own, rather than just applying a flat percentage discount to cost.

Because bone prices move on the Grand Exchange, and cheapest-per-XP genuinely changes day to day between bone types. This tool fetches live prices from the OSRS Wiki's real-time price API for every bone type on the list and ranks them by true cost per Prayer XP, including an estimated wine cost, not just the raw bone price, so you can see which bone is actually most efficient right now.

Because jugs of blessed wine, or blessed sunfire wine, are a real cost of training this way, and skipping them understates the true price per XP. Each jug sacrifices up to 400 shards, so this calculator amortizes the jug's cost, and the sunfire splinter cost if you're using sunfire wine, across those 400 shards when ranking bone types.

The leaderboard falls back to the manually editable price fields already shown for each bone type, so the calculator keeps working even if the live fetch is blocked, rate limited, or temporarily down. You can also edit any bone's price directly at any time to override the live figure with your own number.

Yes. Breaking a blessed bone into shards with a chisel gives 5 Crafting XP per bone regardless of bone type, and this calculator tracks that alongside your Prayer XP total whenever you calculate bones needed for a specific bone type.

Yes. Blessing Superior dragon bones at the exposed altar requires level 70 Prayer, unlike every other bone type on this list, which have no Prayer requirement to bless. Superior dragon bones also yield by far the most shards per bone, 121, making them relevant mainly for higher level accounts despite their high individual cost.

No. This is an independent, unofficial community tool built from publicly documented OSRS Wiki data and the OSRS Wiki's public real-time price API. It is not affiliated with, endorsed by, or sponsored by Jagex Ltd. RuneScape and Old School RuneScape are trademarks of Jagex Ltd.