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500 g Gold Bars
Number of products: 4Half a kilo of gold, and the two refineries that publish specifications for it disagree about what shape it should be. Argor-Heraeus pours a long, flat bar: 91.0 × 41.5 × 7.5 mm. Umicore pours a short, deep one: a 62 × 33 mm top face, around 17.0 mm thick. Same metal, same fineness, two completely different objects.
This is the second-largest format we stock and, together with the kilo bar, the cheapest way to hold gold per gram.
How big a 500 g gold bar actually is
There is no industry standard for cast bar geometry below the London Good Delivery size, so each refinery uses its own moulds. The figures below are from the producers' own specifications.
| Refiner or standard | Dimensions | Form | Packaging |
|---|---|---|---|
| Argor-Heraeus | 91.0 × 41.5 × 7.5 mm | cast | supplied loose with assay documentation |
| Umicore | top face 62 × 33 mm, base 52 × 24 mm, approx. 17.0 mm thick | cast | supplied loose |
Valcambi lists 500 g in both its minted and its cast ranges but publishes no dimensions, so the format of a Valcambi bar is worth confirming on the individual product page rather than assuming.
Why the shapes differ so much
Above the retail sizes, the only widely enforced geometry is the London Good Delivery specification — and that applies to bars of roughly 350 to 430 troy ounces, between twenty-two and twenty-seven times heavier than this one. Between the sealed card formats and the London bar there is no standard at all, so a 500 g mould is a refinery decision rather than an industry one.
The practical effect is that a 500 g bar from one producer may not sit in the same box, tube or safe slot as a 500 g bar from another. Check the dimensions rather than the weight if storage space is fixed.
Refiners in this weight
Argor-Heraeus and Valcambi, alongside bars listed under mixed producers. Both appear on the LBMA Good Delivery list for gold — an accreditation of the refinery and its assay, not a certificate attached to the bar.
What you actually pay
Five hundred grams at the market price, plus a premium that is now among the lowest in the range, plus our margin. That is 16.08 troy ounces. The consideration at this size is not the premium but divisibility: the bar can only be sold as a whole, whereas the same value held as 100 g bars can be released piece by piece. Live prices on the gold price page.
Questions buyers ask about this weight
How much is a 500 g gold bar worth?
Five hundred times the gold price per gram, plus the premium. In ounce terms, 16.08 troy ounces.
How big is a 500 g gold bar?
It depends on the refinery. Argor-Heraeus pours 91.0 × 41.5 × 7.5 mm; Umicore pours a much shorter, thicker bar with a 62 × 33 mm top face, around 17.0 mm thick. Both hold the same half kilo of gold.
Why is there no standard size?
Because the only standardised gold bar geometry is the London Good Delivery specification, and that covers bars of roughly 350 to 430 troy ounces. Retail cast sizes below that are left to each refinery.
Is a 500 g bar minted or cast?
Almost always cast. Pressing effectively stops at 100 g at most refineries, though Valcambi lists 500 g in its minted range as well, so it is worth checking the individual product page.
Do you buy 500 g bars back?
Yes, against the market price at the time of sale. Bars this size are sold whole, so the entire holding moves in one transaction. See the buyback page.
Other gold bar weights
0.5 g · 1 g · 2 g · 2.5 g · 5 g · 10 g · 20 g · 1 oz · 50 g · 100 g · 250 g · 1 kg
All weights are listed together on the gold bars page. For coin formats in the same metal, see gold coins.
