Crystal Knife

Crystal Knife

Attack	82 Physical, 53 Magic
Critical	100
Scaling	Str D, Dex D, Int D
Requires	Str 8, Dex 12, Int 9
Effect
Guard	32% physical, 15 guard boost
Type	Dagger
Attack Type	Slash/Pierce
Skill	Quickstep
FP Cost	3
Weight	2
Upgrades With	Smithing Stones, to +25
Sell Price	100

The Crystal Knife is a Dagger in Elden Ring. It shows up mid-run, in the Academy of Raya Lucaria.

The Crystal Knife is made by sharpening hard crystal, the signature tool of glintstone miners, used to extract glintstone from broken rock so that a faint magic enwreathes the blade. It sits in a chest guarded by Marionette Soldiers deep in the Raya Lucaria Crystal Tunnel. It deals physical and magic damage and, unusually for a weapon upgraded with regular Smithing Stones, cannot be buffed or have its affinity changed. Its scaling favors an even split of Strength and Intelligence, and it lacks the high critical rating of other daggers. It suits a Strength and Intelligence character who wants a light magic sidearm.

How to Get Crystal Knife Guide

Found in a chest inside the Raya Lucaria Crystal Tunnel located in Liurnia of the Lakes.
After taking the first elevator after the Site of Grace down and walking across a wooden beam it is inside the second room on the right, guarded by two distracted Marionette Soldiers.

Where to find Crystal Knife Location?

Crystal Knife map location:

Map credit by Map Genie.

Upgrades

It upgrades with regular Smithing Stones up to +25. It also accepts greases.

Level	Material	Amount	Attack	Scaling
+1	Smithing Stone [1]	x2	86 Physical, 56 Magic	Str D, Dex D, Int D
+2	Smithing Stone [1]	x4	91 Physical, 59 Magic	Str D, Dex D, Int D
+3	Smithing Stone [1]	x6	96 Physical, 62 Magic	Str D, Dex D, Int D
+4	Smithing Stone [2]	x2	101 Physical, 65 Magic	Str D, Dex D, Int D
+5	Smithing Stone [2]	x4	105 Physical, 68 Magic	Str D, Dex D, Int C
+6	Smithing Stone [2]	x6	110 Physical, 71 Magic	Str D, Dex D, Int C
+7	Smithing Stone [3]	x2	115 Physical, 74 Magic	Str D, Dex D, Int C
+8	Smithing Stone [3]	x4	120 Physical, 77 Magic	Str D, Dex D, Int C
+9	Smithing Stone [3]	x6	124 Physical, 80 Magic	Str D, Dex D, Int C
+10	Smithing Stone [4]	x2	129 Physical, 83 Magic	Str D, Dex D, Int C
+11	Smithing Stone [4]	x4	134 Physical, 86 Magic	Str D, Dex D, Int C
+12	Smithing Stone [4]	x6	139 Physical, 89 Magic	Str D, Dex D, Int C
+13	Smithing Stone [5]	x2	143 Physical, 92 Magic	Str D, Dex D, Int C
+14	Smithing Stone [5]	x4	148 Physical, 96 Magic	Str D, Dex D, Int C
+15	Smithing Stone [5]	x6	153 Physical, 99 Magic	Str D, Dex D, Int C
+16	Smithing Stone [6]	x2	158 Physical, 102 Magic	Str D, Dex D, Int C
+17	Smithing Stone [6]	x4	162 Physical, 105 Magic	Str D, Dex D, Int C
+18	Smithing Stone [6]	x6	167 Physical, 108 Magic	Str D, Dex D, Int C
+19	Smithing Stone [7]	x2	172 Physical, 111 Magic	Str D, Dex D, Int C
+20	Smithing Stone [7]	x4	177 Physical, 114 Magic	Str D, Dex D, Int C
+21	Smithing Stone [7]	x6	181 Physical, 117 Magic	Str D, Dex D, Int C
+22	Smithing Stone [8]	x2	186 Physical, 120 Magic	Str D, Dex D, Int C
+23	Smithing Stone [8]	x4	191 Physical, 123 Magic	Str D, Dex D, Int C
+24	Smithing Stone [8]	x6	196 Physical, 126 Magic	Str D, Dex D, Int C
+25	Ancient Dragon Smithing Stone	x1	200 Physical, 129 Magic	Str C, Dex D, Int B

Skill

Quickstep costs 3 FP. The wielder performs a quick sidestep in any direction with a burst of invulnerability frames, a little shorter on repeated uses. Stepping sideways while locked on circles around the target, and an attack right after the step comes out as a rolling or backstep attack depending on the direction. It covers more ground with a light equip load and costs very little FP.

"Skill prized by the crafty and fleet of foot. Perform a quickstep maneuver that allows for circling around lock-on targets."

Build

Use it as a light magic sidearm, paired with a Magic or Cold Bloodstained Dagger for power-stancing.

Stats	Strength 60 and Intelligence 50, the first soft caps for each, with Vigor 50 and Dexterity 12
Affinity	Cannot be infused; it keeps its own scaling.
Talismans	Stargazer Heirloom, Starscourge Heirloom
Pairs With	Bloodstained Dagger

All Daggers

Name	Physical	Magic	Fire	Light	Holy	Crit. Boost	Weight	Str.	Dex.	Int.	Fai.	Arc.	Sell Price	Skill
Black Knife	66 26	0 15	0 15	0 15	65 42	110 15	2	E 8	D 12	0	D 18	0	100	Blade of Death
Blade of Calling	71 31	0 18	0 18	0 18	43 30	110 15	1.5	D 6	D 13	0	C 15	0	1000	Blade of Gold
Bloodstained Dagger	81 36	0 21	0 21	0 21	0 21	110 15	2	C 9	E 12	0	0	0	100	Quickstep
Celebrant's Sickle	79 35	0 20	0 20	0 20	0 20	100 15	1.5	E 6	C 11	0	0	0	100	Quickstep
Cinquedea	98 43	0 25	0 25	0 25	0 25	100 18	3.5	D 10	E 10	0	0	0	500	Quickstep
Crystal Knife	82 32	53 31	0 18	0 18	0 18	100 15	2	D 8	D 12	D 9	0	0	100	Quickstep
Dagger	74 35	0 20	0 20	0 20	0 20	130 15	1.5	D 5	C 9	0	0	0	100	Quickstep
Erdsteel Dagger	67 36	0 21	0 21	0 21	0 21	110 15	2	D 7	D 12	0	D 14	0	200	Quickstep
Fire Knight's Shortsword	75 32.0	0 18.0	22 31.0	0 18.0	0 18.0	110 15	2.0	D 8	D 13	0	D 12	0	100	Quickstep
Glintstone Kris	57 23	68 45	0 14	0 14	0 14	110 15	1.5	E 5	D 12	D 16	0	0	100	Glintstone Dart
Great Knife	75 35	0 20	0 20	0 20	0 20	110 15	1.5	E 6	C 12	0	0	0	100	Quickstep
Ivory Sickle	60 26	60 42	0 15	0 15	0 15	100 15	2	E 6	D 11	D 13	0	0	100	Quickstep
Main-gauche	79 38.0	0 22.0	0 22.0	0 22.0	0 22.0	110 16	2.0	D 7	C 15	0	0	0	100	Parry
Miséricorde	92 36	0 21	0 21	0 21	0 21	140 15	2	E 7	D 12	0	0	0	100	Quickstep
Parrying Dagger	75 35	0 20	0 20	0 20	0 20	110 15	1.5	E 5	C 14	0	0	0	100	Parry
Reduvia	79 38	0 22	0 22	0 22	0 22	110 16	2.5	E 5	D 13	0	0	D 13	100	Reduvia Blood Blade
Scorpion's Stinger	79 38	0 22	0 22	0 22	0 22	110 16	2.5	D 6	C 12	0	0	0	100	Repeating Thrust
Wakizashi	94 42	0 24	0 24	0 24	0 24	100 18	3	D 9	D 13	0	0	0	100	Quickstep

Notes

"A knife made by sharpening hard crystal. Signature weapon of glintstone miners. Used as tool to extract glintstone from broken rock, and as such a faint magic enwreathes the blade."