Buying gold in Hong Kong:jewellers, gold grains, the CGSE — and that 37.429 grams

The same 9999 gold: the jeweller's board in Central says HKD 40,148 a tael, and the international price on your phone is 4,127.14 USD an ounce. Both numbers are right, and three things sit between them: a "tael" of 37.429 grams, an exchange rate of 7.8483, and the 2% commission the jeweller always charges.

For overseas Chinese making the trip to Hong Kong, the trap is almost never fake gold — it is getting the unit wrong and getting the tax wrong. The first makes you think you saved 25%; the second makes you think Hong Kong gold is at an 80% discount. This article breaks the Hong Kong pricing chain down end to end, with every number computed from live quotes at 2026-10-21 20:40 (Hong Kong time, UTC+8).

Three sentences to remember; everything that follows unpacks them:

1. A tael in Hong Kong is 37.429 grams, not 50. When you see "HKD 38,978 a tael", do not rush to compare it with the mainland's "887 yuan a gram" — the units differ and a direct comparison leads to the wrong conclusion.
2. The Hong Kong gold price has no independent market. It is the dollar gold price × the exchange rate ÷ 31.1034768 × 37.429, and with the peg holding between 7.75 and 7.85 Hong Kong gold is essentially the dollar gold price in a different currency unit.
3. The part where Hong Kong is cheaper comes mainly from tax, not from the gold price. Mainland retail jewellery gold carries 13% VAT plus 5% gold-and-silver jewellery consumption tax; in Hong Kong both are zero.

1. Get the unit straight first: the tael is 37.429 grams

What Hong Kong, Macau and older people in Guangdong call a "tael" is the tola tael: 1 tael = 37.429 grams = 1.2034 troy ounces. The mainland market tael is 50 grams; the Taiwanese tael is 37.5 grams. Put the three side by side and the largest gap is 33% — which is why so many people weigh their purchase back home after buying in Hong Kong and feel they were short-changed.

The conversion needs one constant: 1 tola tael = 37.429 ÷ 31.1034768 = 1.2034 ounces. The other way round, 1 ounce = 0.8310 tola tael. Hong Kong jewellers also use "qian" and "fen": 1 tael = 10 qian = 100 fen, so 1 qian = 3.7429 grams, and the smallest common gold-grain packs are 1 qian, 2 qian and 5 qian.

2. How the Hong Kong gold quote is produced

"Hong Kong gold" as listed by the Chinese Gold and Silver Exchange (CGSE) has a fineness of 99 and is quoted in HKD per tola tael. It does not set its own price; it converts the London spot price at the exchange rate. One line:

HKD / tael = USD / oz × USD/HKD ÷ 31.1034768 × 37.429

Substitute today's numbers: 4,127.14 × 7.8483 ÷ 31.1034768 × 37.429 = HKD 38,978 a tael. Broken down further:

Note what the peg does: HKD is confined to 7.75–7.85 against the dollar, so at the same gold price Hong Kong gold only moves between HKD 38,490 and 38,987 a tael, a range of 1.3%. In other words, when you buy Hong Kong gold you are still taking dollar gold-price risk, and the currency component is locked up by the peg. That matters to mainland buyers: Hong Kong gold offers no currency protection — it is the yuan gold price that carries FX exposure.

3. Breaking down the jeweller's board: net gold price + 2% commission + fabrication

The 38,978 above is the net gold price, and you will never see that number on a Chow Tai Fook, Chow Sang Sang or Lukfook board. A jeweller's price has three parts: net gold price, commission (commonly 2% across the trade) and fabrication (charged per piece or per tael for jewellery; usually waived on gold grains and investment bars).

Put that table next to a mainland counter and the arithmetic is clear. Mainland jewellery carries an 18.6% tax load, so the same 887.87 yuan/g net price has a tax-inclusive floor of 1,053 yuan/g, plus 30–80 yuan/g of fabrication; in Hong Kong the all-in price is 914–932 yuan/g (2%–3% commission included, jewellery fabrication on top). Compared like for like, the real gap usually lands at 12%–18%, and the higher the fabrication, the bigger Hong Kong's advantage.

4. Why Hong Kong is cheaper: an 18.6% tax gap

Hong Kong levies no VAT, no consumption tax, no import duty on gold and no capital gains tax. On the mainland, the retail stage charges 5% consumption tax on gold and silver jewellery, and with 13% VAT on top the two combine to about 18.6%. That is the real source of the price gap:

Two corrections are needed, or the table will mislead you:

• Investment bars carry no consumption tax. On the mainland, buying investment bars only involves the VAT-related spread, so the intuition that "bars are cheaper in Hong Kong and jewellery is dearer at home" only partly holds — the tax gap shows up most clearly in jewellery, and is not large on bars.
• Part of the tax gap is eaten by fabrication and brand premium. Hong Kong fabrication follows the design, and on popular pieces it can reach 8%–12% of the gold price; mainland brands often price fabrication per gram, which is more transparent. For gold grains and plain bands Hong Kong's advantage is largest; for design pieces the two are about level.

5. Three ways to buy: jewellery, gold grains, exchange members

If the purpose is allocation, gold grains are the cleanest arithmetic: 2% commission, no fabrication, a 1%–3% buy-back discount, so round-trip friction is about 3%–5%. Buy jewellery with the same money and fabrication starts at 10%, the buy-back takes another 10%, and the round trip is 20% — the gold price has to rise 20% before you break even. This is not gold failing to hold value; you did not buy gold, you bought gold plus an artefact.

The CGSE member route is essentially a leveraged contract through a licensed dealer, with London gold as the underlying and no physical metal. It is the cheapest by far (0.016% spread), but there is no metal, overnight interest is charged and there is forced-liquidation risk. Do not compare the three against each other — the "gold price" is the same, the products are entirely different things.

6. Crossing the border: the 50-gram allowance and the declaration red line

This is the section where things most often go wrong. Mainland customs rules for resident travellers bringing in gold and gold articles: for personal use in reasonable quantities, the first 50 grams are duty-free; anything above 50 grams must be declared and is taxed under the personal postal articles tariff. Fifty grams is about 1.34 tola tael — an ordinary gold chain plus one ring.

• "Personal use in reasonable quantity" is a separate condition. Carrying ten identical gold chains may be judged non-personal even if the total is under 50 grams.
• Not declaring the excess is smuggling. It is not "pay the tax and you are fine" — the goods can be confiscated and a penalty imposed, and serious cases go criminal.
• Splitting the load is a high-risk move. One family making several trips, or several people each carrying part of it: customs looks at travelling companions and the total quantity, and this pattern is an explicit red flag in both AML and customs inspection.
• Hong Kong has a threshold too. Precious metal and gemstone dealers fall under anti-money-laundering regulation: cash transactions of HKD 120,000 or more require customer due diligence and records of identity and source of funds. So "paying cash leaves no trace" is wrong — large cash purchases are actually slower.

Honestly: carrying gold from Hong Kong into the mainland has never been a compliant allocation channel. It is a personal luggage allowance, not a logistics plan. If you genuinely want allocation, see the alternatives in section 8.

7. Selling it back: jewellers only buy their own

Everyone asks "how much per gram" when buying, and only discovers on the way out that the rules are completely different. Three hard rules on Hong Kong buy-backs:

1. They only buy back their own goods, and you need the sales receipt or certificate. Most jewellers will not take another shop's bars, or will price them as "non-house gold" at a discount.
2. A handling fee and wastage are deducted, commonly 2%–5%; jewellery is also subject to a weight deduction, and soldered or stone-set pieces lose more.
3. Settlement is at the day's buying price (not the selling price) — which means you always pay that bid-ask spread.

So do two things from day one: keep the sales receipt and certificate (photograph them to the cloud), and prefer plain gold and standard grains. Those two habits can take your buy-back discount from 10% to under 3%, which matters far more than which jeweller you pick.

8. Three alternatives if you would rather not cross the border

If your money is in Hong Kong or overseas and you are overseas too, shipping metal around is not worth it. Three alternatives with their costs:

Today's spread is 0.658 USD, which on 4,127.14 is 0.0159% — two orders of magnitude below a jeweller's 2% commission. But cheap has a price: leverage, overnight interest and forced liquidation. At 1:100 leverage a 1% adverse move in gold (41.27 USD) wipes out the margin, and in practice you get a warning at around 0.5%. To work out how far your own position is from liquidation, the liquidation price calculator beats guessing.

9. The five most common traps

1. Treating "per tael" as "per 50 grams". 37.429 against 50 is a 25% gap, thousands of Hong Kong dollars on the arithmetic. When you see a board price, ask first: is that a tola tael?
2. Looking at the gold price and not the fabrication. The same HKD 40,000-a-tael board with 300 versus 3,000 of fabrication are two different worlds. Ask for the fabrication amount in writing.
3. Buying fixed-price hard gold. 3D hard gold and 5G gold are sold by the piece, which can work out above HKD 1,400 a gram, and the buy-back is calculated on gold weight alone — an instant halving.
4. Trusting "my shopper will carry it for you". A personal shopper arrangement means taking on someone else's declaration risk, with no way to trace the authenticity or fineness of the jewellery and no paperwork if something goes wrong.
5. Ignoring the currency day. Hong Kong gold is locked inside the peg, but if you eventually convert back to yuan, moves in CNY/HKD add another layer — the gold price can be unchanged and your local-currency return still negative.

10. FAQ

Q1. How many grams is a Hong Kong tael, exactly?
A: 37.429 grams — the tola tael, equal to 1.2034 troy ounces. The mainland market tael is 50 grams and the Taiwanese tael is 37.5 grams. Hong Kong jewellers' boards, gold grain sizes and the exchange's Hong Kong gold quotes all use the tola tael. When you see "HKD 38,978 a tael", divide by 37.429 before comparing, not by 50.

Q2. Is gold really cheaper in Hong Kong, and by how much?
A: The net gold price is nearly identical on both sides; what is cheaper is tax and fabrication. Mainland retail jewellery carries 13% VAT and 5% gold and silver jewellery consumption tax, about 18.6% combined; in Hong Kong both are zero. On today's net price of 887.87 yuan/g, Hong Kong comes to about 914–932 yuan/g all-in and mainland brand jewellery to about 1,050–1,090 yuan/g, a gap of 12%–15%. But investment bars carry no consumption tax, so the gap on bars is much smaller.

Q3. What is the difference between gold grains and bars?
A: Gold grains are small cast 9999 pieces, commonly packed at 1, 2, 5 qian or 1 tael, sold at the net gold price plus about 2% commission with no fabrication, and bought back at a 1%–3% discount — the best fit for pure allocation. Bars carry a brand, serial number and certificate, cost slightly more but are easier to resell and to declare across borders. Jewellery has the highest fabrication and the largest buy-back discount, and only suits the "I want to wear it" need. The gold price is the same for all three; the cost differs threefold.

Q4. How much gold can I bring from Hong Kong into the mainland?
A: For personal use in reasonable quantity, the first 50 grams are duty-free and anything above that must be declared and taxed under the personal postal articles tariff. Fifty grams is about 1.34 tola tael. Note that "personal use in reasonable quantity" is a separate condition — several identical pieces may be judged non-personal even under the weight limit; failing to declare the excess is smuggling, and splitting the load is an explicit red line. This paragraph is general information only; the latest customs notices govern.

Q5. If I buy gold in Hong Kong, how do I sell it back home or overseas?
A: Hong Kong jewellers generally only buy back their own goods, require the receipt or certificate, deduct 2%–5% in fees and wastage, and settle at the day's buying price. Bars from another house are discounted or refused. If you are already overseas, the logistics and insurance of a physical buy-back usually exceed the spread, so it is better from the start to use paper gold, a physically backed gold ETF or XAUUSD and avoid moving the metal twice.

Quotes come from Swissquote; the figures on this page are a snapshot at 2026-10-21 20:40 (UTC+8); FX uses the day's mid rates USD/HKD 7.8483 and USD/CNY 6.6913. Quotes move with the market, the gold price at the top of the page refreshes every 60 seconds, and the converted values in the tables are the snapshot taken when this was written.