Backwardation
A market where the spot price exceeds the futures price, indicating immediate physical tightness. Rare in gold, and usually a signal of stress in the lending market.
See also: Contango, Lease rate
Bailment
The legal relationship in allocated storage: the vault holds identified bars for you as custodian, so the metal is not part of its estate in an insolvency. The single most important word in a custody agreement.
See also: Allocated storage, Unallocated
Bar list
The published register of serial numbers, weights and refiners held in a vault. A bar list you can reconcile to your own holding is the strongest practical evidence that your metal exists.
See also: Allocated storage, Serial number
Bid
The price at which a dealer will buy metal from you. The gap between bid and ask is the round-trip cost of your position before any storage fee.
Bid–offer spread
The gap between the price at which a platform will buy metal from you and the price at which it will sell the same metal to you at the same moment. It is the truest single measure of what participation costs, because unlike an advertised premium it cannot be presented selectively. Screenshot both sides of the same screen when comparing platforms.
See also: Bid, Ask, Round trip
Bullion
Precious metal valued by weight and purity rather than by form, design or rarity. A one-ounce bar and a one-ounce coin of equal fineness carry the same bullion value.
Bullion coin
A coin minted for investment rather than circulation, priced on metal content plus a fabrication premium. Legal tender status matters in some jurisdictions for tax purposes even though the face value is nominal.
See also: Numismatic premium, Sovereign
Buy-back guarantee
A commitment by a dealer to repurchase metal it sold, usually at a published formula relative to spot. Its value depends entirely on the formula and on whether the guarantee survives market stress — a guarantee to buy at an unspecified ‘prevailing bid’ is not a guarantee of price.
See also: Bid, Round trip, Liquidity