Gold bar

A Gold Bar is a bar of refined gold created through the Smithing skill at level 40 by using a gold ore with a furnace or by casting Superheat item on a gold ore. This normally gives 22.5 Smithing experience per bar, but if the Goldsmith gauntlets from the Family Crest quest are worn, the experience is boosted to 56.2 per bar.

Gold bars cannot be made into weapons and armour as other bars can. Instead, the primary use of gold bars is to create jewellery with the Crafting skill. To craft gold bars into jewellery, players must use a gold bar on a furnace with the proper mould in their inventory. If players wish to craft jewellery with gems inset, they must also have the gems in their inventory.

Apart from jewellery, gold bars can be used to create Gold helmets, which are used in the Between a Rock... quest to access Dondakan's mine, and Gold bowls which are used in the Legends' Quest. Despite their name, Gold leaves used in Construction cannot be made by players in any way, and can only be purchased from the Stonemason in Keldagrim. Likewise, gold bars cannot be used to make gold trimmed armour or gilded armour.

Value
A gold ore is worth coins, while a gold bar is worth  coins. Thus, buying a gold ore and smelting it into a gold bar, then selling it, results in a loss of 0 coins. Despite the loss involved, many players buy gold ores and smelt them, especially while using the Goldsmith's gauntlets, as an efficient method of training smithing. Alternatively, Gold bars can be bought and made into gold bracelets, necklaces or amulets for a profit.

Trivia

 * The "gold" in Onyx jewellery appears black even though the gold it is made from is yellow.
 * Using the Goldsmith's gauntlets makes smithing gold bars give more experience than smithing Runite bars. (56.2 experience versus 50 experience)
 * Though the currency in Runescape is gold coins, the coins themselves cannot be made from gold bars unless an Alchemy spell is used on one.
 * A single gold bar is a reward from the Goblin Diplomacy quest.
 * When players attempt to cast Alchemy on Coins, they are informed that it is impossible since coins are already made of gold, however gold bars, which are also made of gold, can be alchemised.
 * Though in real life, gold bars are extremely valuable, in RuneScape they are the cheapest of all metal bars.
 * Unlike what many would expect, gold in any form can't be used to gold-trim any piece of armour, someone who says they can should be reported immediately - it is a scam to have players hand over their armour.