A basilisk is a Slayer monster that requires a Slayer level of 40 to kill and can be found at the Fremennik Slayer Dungeon. Like cockatrices, players must equip a mirror shield when fighting these monsters. Players require a Defence level of 20 in order to receive basilisks as a slayer assignment, as a Defence level of 20 is required to wield the shield. Basilisks have a below average accuracy for their level, but have high Defence.
Without the mirror shield, the player's stats will be greatly reduced. Protect from Melee prayer can be used, but the stats will still be lowered.
Basilisks are a good source of runes. Due to their high drop rate of nature runes, it would be useful to bring a Staff of fire or kill some pyrefiends to the east, to use High Level Alchemy on their frequent metal armour and weapon drops.
These can be safespotted from the southern entrance to their area in the slayer cave, by using the south-east wall to stop their movement or by using the rocks on either side of the room. Note that players cannot set up a dwarf multicannon within the dungeon.
Item Quantity Rarity GE market price Bones 1 Always 64
Item Quantity Rarity GE market price Water rune 75 Common 375 Nature rune 3; 15; 37 Uncommon 636–7,844 Law rune 3; 7 Rare 672–1,568
Weapons and Armour
Item Quantity Rarity GE market price Steel battleaxe 1 Common 192 Mithril spear 1 Uncommon 315 Mithril axe 1 Uncommon 117 Mithril kiteshield 1 Uncommon 1,086 Adamant full helm 1 Uncommon 1,880 Rune dagger 1 Rare 4,552 Mystic hat (light) 1 Rare (1/512) 9,868
Item Quantity Rarity GE market price Grimy guam leaf 1 Common 21 Grimy marrentill 1 Common 14 Grimy tarromin 1 Common 153 Grimy harralander 1 Common 810 Grimy ranarr weed 1 Common 7,294 Grimy irit leaf 1 Common 820 Grimy avantoe 1 Uncommon 1,471 Grimy cadantine 1 Uncommon 1,166 Grimy lantadyme 1 Uncommon 1,081 Grimy kwuarm 1 Rare 1,051 Grimy dwarf weed 1 Rare 581
Item Quantity Rarity GE market price Coins 11; 44; 132; 200; 440 Common Not sold Basilisk bone 1 Common  Not sold Adamantite ore 1 Uncommon 1,267 Basilisk head 1 Very rare (1/2,000) Not sold
Gem drop tableIn addition to the drops above, this monster has access to the gem drop table.
Show/hide gem drop table Item Quantity Rarity GE market price Uncut sapphire 1 Rare 654 Uncut emerald 1 Rare 859 Uncut ruby 1 Rare 1,491 Unknown talisman
1 Very rare Error Uncut diamond 1 Very rare 2,905 Rune javelin 5 Very rare 815 Loop half of key 1 Very rare 9,490 Tooth half of key 1 Very rare 11,839 Rune spear 1 Very rare 12,081 Shield left half 1 Very rare 65,708 Dragon spear 1 Very rare 38,162