Buying Tips - Jewellery  

Here at Richard Hung Jewellers, we believe that there is a piece of jewellery for everyone, no matter the occasion or budget. Be it a gift for someone special, an engagement ring, jewellery to make a statement, or even to invest, our friendly staff will be happy to guide you through the process, ensuring that you make the best decision for your circumstance.


Diamond carat weight is the measurement of how much a diamond weighs. A metric "carat" is defined as 200 milligrams. All else being equal, diamond price increases with diamond carat weight, because larger diamonds are rare and desirable. But two diamonds of equal carat weight can have very different values (and prices) depending on three other factors of the diamond 4Cs: Clarity, Colour and Cut.

It's important to remember that a diamond's value is determined using all of the 4Cs, not just carat weight.

Although colour is undeniably a big factor in value, all diamonds, even those of lower colours and clarities with reasonably good cut, are valuable. Diamonds in colours K, L, and M and clarity SI are diamonds nonetheless and their value is determined by their quality. So, why bother, if differences between colour grades are so difficult to see?

Partly, the answer lies in the practice of long standing. Diamond experts have always placed a high value on colourless diamonds, and this view has affected the minds of consumers. Another reason is that experts can recognize the subtle difference. And even if consumers cannot; there are those who insist on the rarest and most extraordinary diamonds money can buy.

One cannot colour-grade mounted diamonds as accurately as loose diamonds because the colour of the metal influences the appearances of the diamond. The smaller the diamond, the more difficult it is to judge. Two mounted diamonds less than a quarter of a carat, differing by two or three colour grades, can look very much the same in colour, even side by side.

Colourless and near-colourless diamonds are often set in white metal prongs, even when the ring itself is yellow gold. This is because diamonds "draw" the colour of the metal and even high-grade stones will look yellowish. Platinum and rhodium-plated white gold are considered best for mounting colourless or near-colourless diamonds. Diamonds that face up light yellow or brownish present a different problem. They are usually not mounted in platinum or white gold, which make these colours stand out more. Such stones are usually mounted in yellow gold, as that will make them appear whiter or lighter.

Cut refers to the proportions and overall appearance of a diamond. A good cutter has to understand the principle path of light and how to control it through angles and proportions to bring about the best qualities in each diamond, maximising light return and achieving balance between brilliance and fire. Only when the angles are correct will the diamond reflect light to its best ability, ensuring maximum brilliance, fire and sparkle. It is analyzed and graded on how well a diamond's proportions and angles interact to return white and coloured light to the observer.

If all else is equal, an Excellent cut grade guarantees an extremely appealing diamond. Diamonds in the Very Good and even Good cut grades are also attractive. They only differ by comparison to the very best stones.

Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep in the earth. This process can result in a variety of internal characteristics called 'inclusions' and external characteristics called 'blemishes.'

Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance and therefore, the value of the diamond.

Many inclusions and blemishes are too tiny to be seen by anyone other than a trained diamond grader. To the naked eye, a VS and an SI diamond may look similar, but these diamonds are quite different in terms of overall quality. This is why expert and accurate assessment of diamond clarity is extremely important.

Synthetic diamonds
HPHT (High Pressure/High Temperature) Diamonds and CVC (Chemical Vapour Deposition) Diamonds are laboratory-created. Synthetic Moissanite is the latest laboratory created diamond simulant that will fool a thermal diamond tester by giving a false positive reading. For peace of mind, customers should always go to a trusted jeweller with the skills to assess a diamond accurately.

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