OSRS Drop Calculator › Fire ruby

Best way to farm Fire ruby

All 1 monster that drop Fire ruby, ranked by realistic quantity per hour — not just drop rate. Change the seconds-per-kill for any monster to match your own speed. 1 other source isn’t ranked; see why below.

Drop data: Fire ruby on the OSRS Wiki

Currently fastest method
Infernal Mage
3.5 / hr
Monster Drops (rarity · quantity) Avg/kill Sec/kill Kills/hr Qty/hr
Infernal Mage
Combat lvl 66 · Slayer 45
1/64 · 1
 0.016 16 225 3.5

Other sources (not ranked)

Malevolent Mage is a superior slayer monster: it only appears randomly (~1 in 200 kills) while you’re on a slayer task. So it’s not included in the ranking above.

Monster Drops (rarity · quantity) Avg/kill
Malevolent Mage
Combat lvl 162 · Slayer 45
1/64 · 1 (3 rolls)
 0.047
How this is calculated: items/hr = (3600 ÷ seconds per kill) × average items per kill. Each monster's drop lines are listed as the wiki shows them (rarity · quantity); the average adds them all up, each as rarity × average quantity × rolls — so a guaranteed drop plus a rarer bonus drop both count. Drop rates and quantities come from the OSRS Wiki's community-verified drop tables. Seconds-per-kill is an editable estimate based on each monster's hitpoints and defence — your real speed depends on your stats and gear, so adjust it and your edits are remembered on this device. Rates marked ~ are approximate on the wiki.