Frequently Asked Questions

Diamond valuation is the process of determining the value or worth of a diamond. There are several factors that go into the valuation of a diamond, including the quality of the diamond, its size and shape, the clarity and colour of the diamond, and the type and quality of the metal used in the setting.

To determine the value of a diamond, a professional appraiser will carefully inspect the diamond and use specialized tools and techniques to evaluate its characteristics. They will then use this information to determine the diamond's quality and value, taking into account factors such as the 4 Cs (cut, colour, clarity, and carat weight), the diamond's rarity and demand, and the overall condition of the diamond.

The final value of a diamond will vary depending on these and other factors, and may be influenced by market conditions and other external factors. Ultimately, the value of a diamond is determined by its ability to sell for a certain price in the market.

We understand customer concerns over sending valuable and sometimes sentimental items. We have considered all the necessary operational issues such as insurance and postal services to ensure a professional secure service. We use a highly secure Royal Mail service and it is incredibly rare that we experience any delays using the service, ensuring your items arrive safely in a timely manner.

We buy GIA, HRD & IGI certified diamonds. You only need to supply the certificate number and we can use that information to send a quote to you.

In addition, we buy non-certified diamonds. While an approximate valuation in such cases can be made using information such as the carat weight, colour, clarity and cut of the diamond, we can deliver a precise quote if you visit us in our Hatton garden office. This is where we will analyse and asses the diamond in your presence and while you wait.

The value of your diamond is largely determined by what is known in the trade as the four Cs

• CARAT: The weight of the diamond
• COLOUR: The whiter the diamond is, the rarer it is, and this drives value higher
• CLARITY: The cleaner the diamond is, the higher any valuation will be
• CUT: The way in which the stone reflects light, giving it the characteristic diamond sparkle

Yes. We will pay you the best price for the gold / platinum and that will be included in our offer to you.

NO.

At SellDiamond.co.uk we purchase both branded and unbranded jewellery. Whilst our speciality is diamonds, our experts have extensive knowledge of all gemstones and offer the highest prices. We buy jewellery regardless of its condition, but the better the condition, the higher the price.

Yes, our experts have over 20 years’ experience in buying and selling gold bullion. Weather your gold takes the form of bars, coins, or Jewellery, our experts can make you an instant offer on receipt of your item.

We buy all luxury branded watches including Rolex, Patek Phillipe, Audemars Piguet, A Lange & Sôhne, Vacheron Constantin, Richard Mille, Omega, Cartier, Jaeger Le-Coultre, Breguet, IWC and more, regardless of age.

Yes! We have experts on hand available to authenticate branded luxury watches and jewellery, so we can still make you an offer. Having the original box and paperwork increases your offer, so to achieve the best price make sure you include those when you send your item(s) to us.