9,198gp
6,500gp
2,698gp
+2,515gp
—
—
Price history
1 points · hover for detail
- 30D low
- 6,500
- 30D high
- 9,198
- Volatility
- 34.4%
Flip calculator
Includes the 2% Grand Exchange tax
+2,515gp
+2,515 per item · +38.69% ROI
- Capital required
- 6,500 gp
- Gross revenue
- 9,198 gp
- GE tax (2%, 183/item)
- − 183 gp
- Break-even sell
- 6,632 gp
Item data
- High alchemy
- 36 gp99.6% below market
- Low alchemy
- 24 gp
- Shop value
- 60 gp
- Weight
- 3.175 kg
- Stack / note
- Not stackable · noteable
- Released
- Aug 1, 2005
About Rock-shell chunk
The Rock-shell chunk is a members-only item in Old School RuneScape.
"A spherical chunk of rock-shell"
Over the last 30 days it traded between 5,938 and 10,145 gp on the Grand Exchange, averaging 8,532 gp. About 85 units changed hands per day. The price is down 21.9% across that window. The Grand Exchange buy limit is 11,000 every 4 hours. Selling one at the average price costs 170 gp in Grand Exchange tax.
Casting High Level Alchemy returns 36 gp, which is 99.6% below the 30-day average price, so alching a bought one loses money.
How to get Rock-shell chunk
Only Giant Rock Crab (2/128) and King Sand Crab (2/128) drop Rock-shell chunk.
Dropped by
| Monster | Rarity | Quantity |
|---|---|---|
| Giant Rock Crab | 2/128 | 1 |
| King Sand Crab | 2/128 | 1 |
Recipes
Where this item appears in crafting and processing.
Used to make
- 1× Rock-shell helm from 1× Dagannoth hide, 1× Rock-shell chunk, 5,000× Coins
Rock-shell chunk price history
Daily averages rolled up per month, newest first.
| Month | Average | Low | High | Volume |
|---|---|---|---|---|
| October 202612d | 7,941 | 7,496 | 8,944 | 547 |
| September 202623d | 9,161 | 5,938 | 10,145 | 1,798 |
| August 2026 | 8,990 | 7,778 | 11,456 | 1,069 |
| July 2026 | 10,287 | 6,427 | 18,328 | 1,404 |
| June 202621d | 10,937 | 7,449 | 18,358 | 3,774 |
| May 20262d | 10,812 | 10,450 | 11,174 | 71 |
| April 20261d | 10,309 | 10,309 | 10,309 | 9 |
| March 2026 | 11,289 | 7,588 | 17,141 | 16,674 |
| February 2026 | 13,693 | 9,037 | 45,822 | 16,134 |
| January 2026 | 11,228 | 7,221 | 13,903 | 16,630 |
Across 10 months of recorded prices Rock-shell chunk ranged from 5,938 gp in September 2026 to 45,822 gp in February 2026, measured over 211 trading days.
The 30-day average of 8,532 gp sits in the lower third of that range.
All prices in gp. Volume counts units traded across both sides of the Grand Exchange.