20,139gp
19,200gp
939gp
+537gp
—
—
Price history
1 points · hover for detail
Volume · units traded
- 30D low
- 19,200
- 30D high
- 20,139
- Volatility
- 4.8%
Flip calculator
Includes the 2% Grand Exchange tax
+537gp
+537 per item · +2.80% ROI
- Capital required
- 19,200 gp
- Gross revenue
- 20,139 gp
- GE tax (2%, 402/item)
- − 402 gp
- Break-even sell
- 19,591 gp
Item data
- High alchemy
- 90 gp99.6% below market
- Low alchemy
- 60 gp
- Shop value
- 150 gp
- Weight
- 0.01 kg
- Stack / note
- Not stackable · noteable
- Released
- Feb 27, 2002
About Crystal key
The Crystal key is a members-only item in Old School RuneScape.
"A mysterious key for a mysterious chest"
Over the last 30 days it traded between 19,464 and 20,903 gp on the Grand Exchange, averaging 20,035 gp. About 19,494 units changed hands per day. The Grand Exchange buy limit is 11,000 every 4 hours. Selling one at the average price costs 400 gp in Grand Exchange tax.
Casting High Level Alchemy returns 90 gp, which is 99.6% below the 30-day average price, so alching a bought one loses money.
How to get Crystal key
13 monsters drop Crystal key, most commonly Elven Crystal Chest (26/256), Grubby Chest (6/100) and Deranged archaeologist (7/131). It can be made from Loop half of key and Tooth half of key.
Dropped by
| Monster | Rarity | Quantity |
|---|---|---|
| Elven Crystal Chest | 26/256 | 1 |
| Grubby Chest | 6/100 | 1 |
| Deranged archaeologist | 7/131 | 1 |
| Grotesque Guardians | 5/142 | 1 |
| Intricate pouch | 1/45 | 1 |
| Great white shark | 2/100 | 1 |
| Sarachnis | 1/100 | 1 |
| Alchemical Hydra | 1/101 | 1 |
| Chest (moon key) | 1/107 | 1 |
| Thermonuclear smoke devil | 1/107 | 1 |
| Kree'arra | 1/127 | 1 |
| Kraken | 1/128 | 1 |
| Reward casket (elite) | 1/14,662.5 | 1 |
Recipes
Where this item appears in crafting and processing.
Made from
Used to make
- 1× Enhanced crystal key from 1× Crystal key, 10× Crystal shard
Crystal key price history
Daily averages rolled up per month, newest first.
| Month | Average | Low | High | Volume |
|---|---|---|---|---|
| October 202612d | 19,775 | 19,464 | 20,171 | 270,629 |
| September 2026 | 20,036 | 19,586 | 20,903 | 502,029 |
| August 2026 | 20,282 | 19,723 | 21,532 | 610,168 |
| July 2026 | 21,307 | 20,453 | 22,204 | 751,917 |
| June 202621d | 21,480 | 21,129 | 24,934 | 318,793 |
| May 20262d | 23,593 | 22,486 | 24,699 | 27,868 |
| April 20261d | 22,525 | 22,525 | 22,525 | 15,834 |
| March 2026 | 21,299 | 20,585 | 21,916 | 192,810 |
| February 2026 | 23,174 | 21,882 | 24,355 | 39,127 |
| January 2026 | 20,488 | 19,786 | 21,281 | 17,856 |
Across 10 months of recorded prices Crystal key ranged from 19,464 gp in October 2026 to 24,934 gp in June 2026, measured over 218 trading days.
The 30-day average of 20,035 gp sits in the lower third of that range.
All prices in gp. Volume counts units traded across both sides of the Grand Exchange.
