Sapphire ring

The Sapphire ring is a free-to-play Old School RuneScape item — “A valuable ring.”. Its Grand Exchange buy limit is 10,000 per 4 hours. Right now it buys at 392 gp and sells at 405 gp — a net margin of 5 gp (1.3% ROI) after the 2% Grand Exchange tax of 8 gp. High alchemy yields 540 gp.

To flip it, place a buy offer near 392 gp and a sell offer near 405 gp; the spread minus GE tax is your profit. Confidence figures are model estimates from live OSRS Wiki prices, not guarantees — flip responsibly.