The Signet Ring Half (a) can be found while performing any non-combat Skill action, provided the player has a Gold Topaz Ring currently equipped in their active armour slot. The chance to find Signet Ring Half (a) is equal to x in 19,800,000 where x is the level required to perform the skill action. For example, if the player smithed an Iron Dagger their chance to find Signet Ring Half (a) would be 15 in 19,800,000, or 1 in 1,320,000. Performing higher level skill actions increases the chance to find the ring half.
The table below shows estimates for different high level skilling actions (not that resource collection time is not included). Note that with the Multi-Tree Skill Upgrade, Woodcutting becomes the fastest source for Signet Ring Half (a).
Skill
|
Action
|
Average time (s)
|
Level
|
Chance/Action
|
Chance/Hour
|
Chance/Day
|
Chance/Week
|
Woodcutting
|
Redwood
|
3.75 s
|
90
|
0.000455%
|
0.435%
|
9.94%
|
52.0%
|
Woodcutting
|
Magic
|
5 s
|
75
|
0.000379%
|
0.272%
|
6.34%
|
36.8%
|
Woodcutting
|
Yew
|
3 s
|
60
|
0.000303%
|
0.363%
|
8.36%
|
45.7%
|
Woodcutting
|
Mahogany
|
2.5 s
|
55
|
0.000278%
|
0.399%
|
9.15%
|
48.9%
|
Woodcutting
|
Maples
|
2 s
|
45
|
0.000227%
|
0.408%
|
9.35%
|
49.7%
|
Woodcutting
|
Teak
|
1.5 s
|
35
|
0.000177%
|
0.423%
|
9.68%
|
51.0%
|
Woodcutting
|
Willows
|
1.25 s
|
25
|
0.000126%
|
0.363%
|
8.36%
|
45.7%
|
Fishing
|
Whales
|
7.2 s
|
95
|
0.000480%
|
0.240%
|
5.59%
|
33.2%
|
Fishing
|
Cave Fish
|
4.8 s
|
75
|
0.000379%
|
0.284%
|
6.59%
|
38.0%
|
Fishing
|
Leaping Broad Fish
|
3.84 s
|
70
|
0.000354%
|
0.331%
|
7.65%
|
42.7%
|
Firemaking
|
Redwood
|
15 s
|
90
|
0.000455%
|
0.109%
|
2.58%
|
16.7%
|
Firemaking
|
Magic
|
10 s
|
75
|
0.000379%
|
0.136%
|
3.22%
|
20.5%
|
Firemaking
|
Yew
|
7 s
|
60
|
0.000303%
|
0.156%
|
3.67%
|
23.0%
|
Firemaking
|
Mahogany
|
6 s
|
55
|
0.000278%
|
0.167%
|
3.92%
|
24.4%
|
Firemaking
|
Maples
|
5 s
|
45
|
0.000227%
|
0.164%
|
3.85%
|
24.0%
|
Cooking
|
Whales
|
3 s
|
95
|
0.000480%
|
0.574%
|
12.91%
|
62.0%
|
Mining
|
Dragonite
|
2.65 s
|
95
|
0.000480%
|
0.650%
|
14.48%
|
66.5%
|
Mining
|
Runite
|
2.08 s
|
80
|
0.000404%
|
0.697%
|
15.45%
|
69.1%
|
Mining
|
Adamant
|
1.79 s
|
70
|
0.000354%
|
0.708%
|
15.69%
|
69.7%
|
Mining
|
Mithril
|
1.69 s
|
50
|
0.000253%
|
0.536%
|
12.11%
|
59.5%
|
Smithing
|
Dragonite Platelegs
|
2 s
|
99
|
0.000500%
|
0.896%
|
19.43%
|
78.0%
|
Theiving
|
Knights
|
3 s
|
75
|
0.000379%
|
0.454%
|
10.34%
|
53.4%
|
Fletching
|
Redwood Longbow (u)
|
2 s
|
95
|
0.000480%
|
0.860%
|
18.72%
|
76.6%
|
Crafting
|
Gold Diamond Rings
|
1.5 s
|
80
|
0.000404%
|
0.965%
|
20.76%
|
80.4%
|
Runecrafting
|
Ancient Runes
|
2 s
|
85
|
0.000429%
|
0.770%
|
16.93%
|
72.7%
|
Herblore
|
Damage Reduction
|
2 s
|
90
|
0.000455%
|
0.815%
|
17.83%
|
74.7%
|
Template:Signet Ring Half (a) Sources