Obtain a mould from a crafting store or from the workshop in your player-owned house (POH). All varieties of jewellery accumulate a profit if crafted from gold bars. The Grand Exchange price of a gold bar is 95 rs 07 gold. A gold amulet (strung and unstrung) sells for 121, gold ring sells for 140, gold necklace sells for 177 and gold bracelet sells for 211.
Fill your inventory with a mould and gold bars.
Teleport or walk to any furnace throughout "RuneScape." Furnaces conveniently located near a bank include Al-Kharid, Falador, Port Phasmatys (member-only) and Edgeville (members-only).
Use a gold bar on the furnace. A dialog box will appear on your screen giving examples of the items you can create. Select the appropriate piece of jewellery and make sure "All" is selected. This setting crafts all gold bars in your inventory. If you wish to change the amount, use the drop-down menu and select the appropriate amount of jewellery you desire.
Sell the jewellery at the Grand Exchange and receive the profit.