I can’t imagine this being rng. I have run 35 rifts this morning, on 3 separate characters. The gems in each of them have broken…none of them have upgraded not even once. This has got to be a bug. The gems are not at level, they are below level as I’ve checked each of them to make sure. Please check on this as it makes it worthless to do rifts.
Provide details…
- what is the level of each of the gems you are trying to upgrade ?
- what is the tier level of the Greater Rift you are running ?
The odd of upgrading a gem increases with the difference between the Greater Rift level and the Gem level. It has nothing to do with your hero level.
Here’s some info provided on Icy Veins website:
- 100%: Greater Rift Level higher than or equal to Gem’s Rank + 10;
- 90%: Greater Rift Level ≥ Gem’s Rank + 9;
- 80%: Greater Rift Level = Gem’s Rank + 8;
- 70%: Greater Rift Level = Gem’s Rank + 7;
- 60%: Gem’s Rank + 6 ≥ Greater Rift Level ≥ 0;
- 30%: Greater Rift Level = Gem’s Rank - 1;
- 15%: Greater Rift Level = Gem’s Rank - 2;
- 8%: Greater Rift Level = Gem’s Rank - 3;
- 4%: Greater Rift Level = Gem’s Rank - 4;
- 2%: Greater Rift Level = Gem’s Rank - 5;
- 1%: Greater Rift Level = Gem’s Rank - 6;
- 0%: Greater Rift Level ≤ Gem’s Rank - 7.
2 Likes
Should be
- 1%: Greater Rift Level = Gem’s Rank - 6 → -15;
- 0%: Greater Rift Level ≤ Gem’s Rank - 16.
E.g. GR110 clear: https://i.imgur.com/fvhGKvw.jpeg
1% chance to upgrade 125 gem (GR = gem-15): https://i.imgur.com/B0gz5sq.jpeg
0% chance to upgrade 126 gem (GR = gem-16): https://i.imgur.com/jWUF2we.jpeg
3 Likes
From Maxroll: Legendary Gem Mechanics, Overview
| GR tier compared to Gem’s rank | Chance of upgrading | |
|---|---|---|
| +10 or higher | 100% | |
| +9 | 90% | |
| +8 | 80% | |
| +7 | 70% | |
| +6 to +0 | 60% | |
| -1 | 30% | |
| -2 | 15% | |
| -3 | 8% | |
| -4 | 4% | |
| -5 | 2% | |
| -6 to -15 | 1% | |
| -16 or lower | 0% |
3 Likes
60% chance does not mean you will get an upgrade 6 times out of every 10 tries.
You still have a 40% chance of failure on EVERY attempt.
I doubt that this is a Bug.
2 Likes
A useful tool: https://www.diablo3gemcalculator.com
2 Likes
2024-09-26T13:32:00Z
Seasonal Characters: Level 70 (776)
Witch Doctor (Seasonal)
| Boon of the Hoarder | Rank 5 |
Demon Hunter (Seasonal)
| Taeguk | Rank 87 | |
| Simplicity’s Strength | Rank 86 | |
| Bane of the Trapped | Rank 86 |
Crusader (Seasonal)
| Bane of the Trapped | Rank 10 | |
| Bane of the Stricken | Rank 25 | |
| Enforcer | Rank 25 |
Barbarian (Seasonal)
| Legacy of Dreams | Rank 5 |
Monk (Seasonal)
| Gogok of Swiftness | Rank 0 |
Wizard (Seasonal)
| Bane of the Stricken | Rank 20 | |
| Bane of the Trapped | Rank 20 | |
| Zei’s Stone of Vengeance | Rank 20 |
Note: The Demon Hunter’s Taeguk was Rank 86 yesterday. So, @Butters was able to get at least 1 successful upgrade since then.
1 Like
It would be really nice if @Butters would provide some sort of reply… 
3 Likes
Yep.
Chance for x successes on 10 attempts at 60%:
| Successes | Failures | Probability |
|---|---|---|
| 0 | 10 | 0.01% |
| 1 | 9 | 0.16% |
| 2 | 8 | 1.06% |
| 3 | 7 | 4.25% |
| 4 | 6 | 11.15% |
| 5 | 5 | 20.07% |
| 6 | 4 | 25.08% |
| 7 | 3 | 21.50% |
| 8 | 2 | 12.09% |
| 9 | 1 | 4.03% |
| 10 | 0 | 0.60% |
4 Likes