Enhancements in The Witcher 2: Assassins of Kings are items which can be applied to armor and/or weapons to improve their basic statistics. Enhancements can be applied only to items having enhancement slots, and are not replaceable (i.e. once you've applied an enhancement you can't revert that or apply other enhancement). Items of high quality tend to have more enhancement slots.
Armor enhancements
| Image | Name | Effects | Buy | Sell | Weight | Craft |
|---|---|---|---|---|---|---|
|
Aedirnian Special Forces' cockade |  +2
|
95 
|
5
|
 0.1
|
|
|
Amethyst armor enhancement | +1 +5
|
104
|
5
|
0.2
|
|
|
Armor enhancement | +1
|
10 – 33
|
2
|
0.2
|
|
|
Dhu Bleidd | +1 bonus on Signs +5
|
189
|
10
|
0.2
|
|
|
Diamond armor reinforcements | +2+10
|
207
|
9
|
0.2
|
|
|
Dwarven enhancement | +2+10
|
207
|
9
|
0.2
|
|
|
Elaine Bleidd | +1+15
|
275
|
12
|
0.2
|
|
|
Elven enhancers | +1 bonus on Signs +4 Resistance to  +2%
|
|
|
0.2
|
|
|
Endrega hide reinforcements | +1 Resistance to +10%
|
40
|
3
|
0.2
|
|
|
Fibre enhancer | +1 Resistance to  +1%
|
10 – 33
|
2
|
0.2
|
|
|
Hardened leather reinforcement | +1 Resistance to +1%Resistance to  +1%
|
10
|
2
|
0.2
|
|
|
Kayran carapace reinforcement | +1 regeneration in combat +5%Resistance to +5%Resistance to +5%
|
54
|
3
|
0.5
|
|
|
Leather enhancement | +1 Resistance to +1%
|
10 – 33
|
2
|
0.2
|
|
|
Magic wrap | +2 bonus on Signs +3
|
234
|
10
|
0.2
|
|
|
Mail enhancement | +1+10 Resistance to +1%
|
158
|
7
|
0.2
|
|
|
Reinforced leather enhancement | +1 Resistance to +2%Resistance to +2%
|
10 – 34
|
2
|
0.2
|
|
|
Robust leather reinforcement | +1 Resistance to +1%Resistance to +1%Resistance to +1%
|
10 – 34
|
2
|
0.2
|
|
|
Runic armor enhancement | +1 bonus on Signs +2
|
104
|
5
|
0.2
|
|
|
Steel plate enhancement | +2 Resistance to +1%Resistance to +1%Resistance to +1%
|
52 – 65
|
4
|
0.2
|
|
|
Studded leather reinforcement | +2
|
64
|
4
|
0.2
|
|
|
Temerian Special Forces' cockade | +2
|
95
|
5
|
0.1
|
|
|
Vran armor enhancement | +1+15 Resistance to +5%
|
331
|
14
|
0.5
|
|
Weapon enhancements
| Image | Name | Effects | Buy | Sell | Weight | Craft |
|---|---|---|---|---|---|---|
|
Earth rune | +25 reduction on block +5%
|
250
|
11
|
0.2
|
|
|
Fire rune | +5%+10% Resistance to +20%
|
500
|
21
|
0.2
|
|
|
Moon rune | bonus on Signs +4
|
375
|
16
|
0.2
|
|
|
Sun rune | +5%
|
375
|
16
|
0.2
|
|
|
Ysgith rune | +7%+8%
|
500
|
21
|
0.2
|
|