Crushed infernal shale

The Crushed infernal shale is a members-only Old School RuneScape item — “Speckled with smouldering rock.”. Its Grand Exchange buy limit is 25,000 per 4 hours. Right now it buys at 1,300 gp and sells at 1,352 gp — a net margin of 25 gp (1.9% ROI) after the 2% Grand Exchange tax of 27 gp. High alchemy yields 48 gp.

To flip it, place a buy offer near 1,300 gp and a sell offer near 1,352 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.