The calculation method of the price of gold ornaments in Hong Kong is: gold price × weight × 1.02 (2% commission is required by all gold buyers in Hong Kong)+manual fee.
In addition, the conversion method of two grams in Hong Kong is: Hong Kong weight ×37.429 (one kilogram in Hong Kong equals 600 grams, and one kilogram equals 16 ounces).
When buying gold ornaments in the mainland, the price you need to pay is "weight × raw material gold price+manual fee", and there is no need to pay extra commission. Manual cost is relatively low, only 7- 10 yuan/gram.
Extended data:
Identification of adulteration of gold;
1. Does gold have white highlights?
Cut the gold bars or jewelry with scissors, and observe the section with a magnifying glass. If you see white bright spots, because gold and iridium can't blend together, it means that gold is doped with iridium.
2. Measure the specific gravity.
First, measure the weight of a pure gold bar with a balance, then put the gold bar into a measuring cup and pour water to drown it. Then put the detected gold bars into a measuring cup and observe whether the scale of water rises or falls. As long as there is a change, it means that gold bars are not pure gold. But if it is gold jewelry, this method is not applicable, because there is air in gold jewelry.
Real gold is not afraid of fire.
Put gold bars or gold jewelry on the fire for a period of time and observe its changes. Because iridium will combine with oxygen in the air to produce oxidation reaction, gold bars with insufficient purity will turn gray; And pure gold will appear bright red after being baked by fire. However, this method may have some damage to jewelry.
Baidu encyclopedia-gold identification adulteration