These are all the item's you could possibly get with a Crystal Key. 1 Crystal key give's you one of the items below. (It's at random).
Crystal Key Chest - Total of 92 items
1.) Chompy bird hat, There are 16 different Chompy bird hat's
2.) Blue elegant shirt
3.) Blue elegant skirt
4.) Blue elegant blouse
5.) Blue elegant legs
6.) Green elegant shirt
7.) Green elegant skirt
8.) Green elegant blouse
9.) Green elegant legs
10.) Black elegant shirt
11.) Black elegant legs
12.) Purple elegant shirt
13.) Purple elegant skirt
14.) Purple elegant blouse
15.) Purple elegant legs
16.) Red elegant shirt
17.) Red elegant skirt
18.) Red elegant blouse
19.) Red elegant legs
20.) White elegant blouse
21.) White elegant skirt
22.) Banner, There are 16 different banner's
23.) Zamorak flag
24.) Saradomin flag
25.) Pirate's hat
26.) Eagle cape
27.) Abyssal whip
28.) Gadderhammer
29.) Lederhosen hat
30.) Spottier cape
31.) Spotted cape
32.) Rune full helm
33.) Rune platebody
34.) Rune med helm
35.) Rune chainbody
36.) Rune sq shield
37.) Karil's coif
38.) Karil's top
39.) Karil's skirt
40.) Karil's crossbow
41.) Verac's helm
42.) Verac's brassard
43.) Verac's plateskirt
44.) Verac's flail
45.) Dharok's helm
46.) Dharok's platebody
47.) Dharok's platelegs
48.) Dharok's greataxe
49.) Guthan's helm
50.) Guthan's platebody
51.) Guthan's chainskirt
52.) Guthan's warspear
53.) Torag's helm
54.) Torag's platebody
55.) Torag's platelegs
56.) Torag's hammers
57.) Ahrim's hood
58.) Ahrim's robetop
59.) Ahrim's robeskirt
60.) Ahrim's staff