{"item_id":21730,"name":"Black tourmaline core","url":"https://runescapetrader.com/item/21730","unit":"GP","buy_limit":5,"prices":{"instant_buy":{"gp":387051,"observed_at":"2026-10-26T03:33:08Z","age_seconds":83621,"status":"stale"},"instant_sell":{"gp":331850,"observed_at":"2026-10-26T04:33:17Z","age_seconds":80012,"status":"stale"}},"market_data_updated_at":"2026-10-26T04:47:27Z","source":{"name":"OSRS Wiki real-time prices","url":"https://oldschool.runescape.wiki/w/RuneScape:Real-time_Prices"}}