How do you enchant sapphire items on RuneScape

To enchant sapphire items you need level 7 magic. Have one Water Rune and one Cosmic Rune in your inventory. Click on the spell "Lvl-1 Enchant" in your spell book. Then it will show you your inventory. Click on a sapphire ring, necklace, bracelet or amulet and it will then enchant it (only members of Runescape can enchant rings, necklaces and bracelets).