The hallmark is a proportion, not a promise

Every gold piece sold in the Emirates must carry a hallmark. The stamp states the karat mark, which is a proportion of gold in the alloy. It does not state the weight, the workmanship, the maker or the resale value. It is a legal requirement, not a shop's courtesy, and it is the one thing on the piece that a buyer can check against the published prices.

What the hallmark certifies

The hallmark certifies that the piece contains at least the proportion of gold stated by the karat mark. A piece stamped 18 karat must contain no less than 750 parts of gold per thousand. The stamp is applied after assay, and it is a legal declaration by the seller. In the Emirates, hallmarking is mandatory for gold jewellery offered for sale.

The certification is narrow. It speaks to the proportion of gold, not to the quality of the alloy, not to the skill of the maker, and not to the durability of the piece. A hallmark does not mean the piece is well made; it means the metal is what it says it is.

What the hallmark does not say

The hallmark says nothing about workmanship. A badly made piece can carry the same stamp as a finely made one. It says nothing about weight; a heavy piece and a light piece at the same karat mark will carry the same stamp. It says nothing about design, brand or origin.

Most importantly for a buyer, the hallmark says nothing about resale. A piece with a higher karat mark will contain more gold, but the resale value depends on the weight and the buy-back counter's rate on the day. The hallmark is a starting point for that calculation, not a guarantee of what the counter will pay.

Hallmarking is a legal requirement

In the Emirates, gold jewellery offered for sale must be hallmarked. The requirement is set by the Emirates Authority for Standardisation and Metrology, and it is enforced by the local municipalities. A shop that sells unmarked gold is breaking the law, not just breaking a convention.

That legal backing is what makes the hallmark useful. A buyer can rely on the stamp as a statement of fact, not as a marketing claim. But the law sets a minimum, and the hallmark certifies at least that minimum. The actual proportion may be slightly higher, though in practice it is close to the stated mark.

The karat mark and the published price

The published price from Dubai Jewellery Group is for each karat mark, so the hallmark connects the piece to the price. A buyer can weigh the piece, read the mark, and compare the price paid to the suggested retail price per gram at that mark. That comparison is the beginning of value, not the end.

The hallmark also allows the division by purity that this site performs. Without a reliable mark, the published price cannot be divided into a price per gram of fine gold. The hallmark is the key that unlocks the arithmetic.

What a buyer should check at the counter

Before paying, a buyer should check that the piece carries a hallmark and that the mark is legible. The stamp is usually on the inside of a ring, on the clasp of a chain, or on the back of a pendant. It may be tiny, but it should be clear enough to read with a loupe.

The buyer should also check that the mark matches the description given by the seller. A piece described as 21 karat must carry the 21 karat stamp. If it does not, the buyer should ask why. The hallmark is the seller's legal statement, and a mismatch is a red flag.

The limits of the stamp

The hallmark is not a quality grade. A 24 karat piece is not better than an 18 karat piece in any sense except gold content. The lower mark may be harder, more durable, and better suited to daily wear. The choice of mark is a choice of trade-offs, and the hallmark simply states where the piece sits on that trade-off.

The stamp is also not a price tag. It tells the buyer how much gold is in the piece, but not what the piece is worth. Worth depends on weight, on making, on the shop's margin, and on the day's metal price. The hallmark is one fact among many.

The lower the karat, the more you pay for the gold you actually receive

When a counter publishes a price per gram for each karat, the lower marks look cheaper at first glance. That lower number is simply a smaller fraction of gold in the same weight of metal. Once the published price is divided by the proportion of gold the mark carries, the cost of the gold itself is exposed. For several marks, that cost per gram of fine gold is identical. The difference in the published numbers is mechanical, not a bargain.

A buyer who chooses a lower karat because the sticker price is lower is paying the same rate for the gold inside, but receiving less of it in each gram. The rest of the gram is alloy metal, which has some value but not at the rate of fine gold. The arithmetic shows that the lower mark does not offer a cheaper route to owning gold. It offers a smaller amount of gold at the same underlying rate, plus more alloy.

Before any making charge is added, the lower karat is already a worse exchange of money for gold. The published price per gram of jewellery is lower, but the price per gram of fine gold is not. That means every dirham spent on a lower karat buys less gold than the same dirham spent on a higher karat, unless the higher karat carries an additional premium. The mark is a tariff structure, not a discount ladder.

The making charge widens the gap between marks

The published price per gram of jewellery at each karat is only the metal component. On top of that, a making charge is added for the labour of shaping and finishing the piece. That charge is usually quoted per gram of jewellery, not per gram of fine gold. As a result, the making charge applies to the whole weight of the piece, including the alloy metal. The lower the karat, the more alloy is in that gram, and the making charge is still charged on the entire gram.

When the making charge is added, the price per gram of fine gold rises for every karat, but it rises more for lower karats. A lower karat has less fine gold per gram, so a flat making charge per gram of jewellery translates into a larger charge per gram of fine gold. The buyer pays the same labour cost for a gram that contains less gold. The division after adding the making charge shows a steeper climb for lower marks.

The making charge is not a percentage of the gold value; it is a fixed amount per gram of finished piece. Therefore, the lower the karat, the larger the share of the making charge relative to the gold content. A buyer comparing marks must add the making charge to the published metal price and then divide by the gold proportion. That division reveals that lower karats become even less favourable for value.

The alloy in a lower karat is not free

The non-gold portion of a lower karat piece is made of other metals such as silver, copper, zinc or nickel. These metals have a market value, but it is far below that of gold. When a buyer pays for a gram of lower karat jewellery, the price reflects the gold content and a little for the alloy, but the alloy is not priced at its full market value. Sellers do not itemise the alloy cost separately, so the buyer cannot see how much of the gram's price is for non-gold metal.

The published price per gram of fine gold, after division, treats the entire gram's price as if it were for gold only. That is the correct comparison across karats, but it means the alloy is effectively being valued at the same rate as gold in that calculation. In reality, the buyer is paying a gold-equivalent rate for metal that is not gold. The lower the karat, the more of this substitution occurs.

A buyer who wants to know what they are paying for gold alone must subtract the value of the alloy from the published price before dividing by the gold proportion. That is rarely done at the counter. The simpler division of published price by gold proportion still gives a comparable rate, but it overstates the effective cost of gold because it ignores the alloy's residual value. The overstatement is larger for lower karats.

The buy-back counter uses the same division but in reverse

When a piece is sold back, the counter tests the karat and weighs the piece. The offer is based on the weight of fine gold in the piece, calculated by multiplying the total weight by the karat proportion. The counter then applies its own rate per gram of fine gold, which is lower than the rate used for selling. The alloy metal is not paid for separately; it is simply ignored or included at a negligible scrap value.

The division used at purchase is reversed at resale. At purchase, the buyer divides the published price by the gold proportion to see the rate per gram of fine gold. At resale, the counter multiplies the total weight by the gold proportion to get the fine gold weight, then multiplies by its buy-back rate. The result is that the lower karat piece, which had more alloy, returns less money because it contains less fine gold.

The making charge is lost entirely on resale. The buy-back rate applies only to the fine gold content, not to the labour or alloy. Therefore, the lower the karat and the higher the making charge paid, the larger the loss on resale. A buyer who expects to sell the piece later should account for this asymmetry. The mark is a proportion that works against the buyer on resale if a lower karat was chosen for a lower upfront price.

The choice of karat is a choice of how much alloy to carry and pay for

Every karat below twenty-four includes a deliberate addition of other metals to change the colour, hardness or workability of the gold. Those additions are not free, but they are priced as if they were gold in the published price. The buyer pays the same rate per gram of fine gold for three common marks, meaning the alloy comes along at that rate too. The lower the karat, the more alloy is carried in each gram, and the more the buyer pays for metal that is not gold.

For a buyer who values the durability of a lower karat, that alloy has a function. It makes the piece more resistant to bending or scratching, and it can produce colours not possible in pure gold. But that function does not change the arithmetic: the cost per gram of fine gold is the same, so the buyer is paying for the alloy at the gold rate. The alloy's practical benefit is paid for in the making charge, not in the metal price.

The karat mark is a proportion, and that proportion determines how much gold and how much alloy are in each gram. The buyer's choice of mark is therefore a choice of how much alloy to carry and pay for at the gold rate. A higher karat means more gold and less alloy, so less of the purchase price goes to non-gold metal. A lower karat means more alloy, and the buyer pays the same rate for that alloy as for gold.