|Release date||21 April 2016 (Update)|
|Alchemy||Cannot be alchemised|
|Destroy||You can purchase another from Percy.|
|Store price||40 Golden nuggets|
|Contains gems - but which ones?|
The chances of an individual gem being an uncut onyx is 1/100,000,000 (thus 1/2,500,000 per bag), as confirmed by Jagex Moderators on their weekly Q&A session. As of September 12 2017, only one player has obtained an onyx from a bag of gems.
The probabilities in this section are an estimation based on the data of opening 410 bags full of gems, totaling 16,400 uncut gems being obtained.
According to these estimates, a bag could be expected to bear around 42,765.66 value of gems on average.