Uncertified Diamonds and Diamond Jewellery

Emerald Diamond RingLarge 3 Stone Diamond RingDiamond Stud Earrings

Why Choose Us

Nearly all jewellery and polished diamonds up until the late 1970s were produced and sold without diamond certificates from GIA, HRD, EGL and IGI to name but a few famous diamond certification houses.

Diamond certificates are a relatively new phenomena which have emerged over the last 30 years enabling everyone to know the exact weight, colour, purity and cut of each diamond.

Our gemologists can grade any diamond as accurately as the GIA (Gemological Institute of America). We can put the correct market price on any diamond from £10 to £1m.
HowCashForDiamonds.co.uk are members of GIA, HRD and full members of the British Jewellers Association. We are also members of the trades diamond global inventory system Rapnet. Being a full member of these organisations, we are able to see the exact current market price of a like for like diamond that you have sent us. Enabling us to pay you the maximum price the market allows. We have equipment to test for colour, purity, weight and fluorescence of your diamonds.

That is why we are more than happy to purchase any diamonds loose or in jewellery which are uncertified and without a diamond certificate.
We will buy any uncertified Georgian, Victorian, Edwardian, or diamond from 1950s onwards to today in any shape, purity, cut, colour and carat weight without a certificate.

If you have a diamond which has no certificate and you feel it is worthy of certification, we are able to offer you the facility of certificating your diamond via us sending it on your behalf to GIA in USA or to HRD in Antwerp as we are full members of both these certificating houses. Once this has been done then your diamond would certainly be worth more with a current certificate. This whole process can be from 1-4 weeks.

How We Pay For Your Diamonds

Following your request, we will send you a Royal Mail Special Delivery pack. In the pack you will find a pre-paid envelope and a secure pouch to hold your valuables. The pack is insured for up to £500. If your goods are worth more which normally they are, then when you go to the post office please say you wish to pay the extra cost of about £3 on our parcel which will then give you full insurance cover of £2500. If your goods are worth above £2500, then we are covered for up to £15000 within our Lloyd’s Jewellers’ Block Policy.

Once we have evaluated your goods we will contact you to tell you the maximum price we can pay. Assuming you are happy with our offer we will ask for your bank details and then do a bank transfer.

In the unlikely event of us not purchasing your items, we will return them to you free of charge, fully registered. The pack will be fully covered by us for the maximum insurance value of £2500.


If you don’t feel comfortable using Royal Mail, please visit us at 48B Hendon Lane, London N3 1TT.

Opening Hours

Monday to Friday 10am-4pm
Saturday 9am-1pm by appointment only.

Contact Us

Call 020 8446 8538
WhatsApp 07770 303745
Email [email protected]

Diamond Calculator

    Please provide the details below to access and open the calculator and get an instant price for your diamond and or diamond jewellery.

    1. Enter Details 2. Access Calculator
    3. Get an instant price

      Next step: Fill in all the details below, to get an instant cash price for your diamond. Our calculator is giving prices for single diamonds only.

      "We will also pay you the market price for the gold or platinum in your diamond jewellery."

      Contact Our Experts

      Welcome to HowCashforDiamonds.co.uk, where we offer a unique and human-friendly approach to diamond selling. We understand that selling your diamond can be a daunting task, but we are here to make it as easy and stress-free as possible.

      We are proud to offer a comprehensive diamond price calculator that is specifically tailored to the UK market. Our diamond price calculator uses the latest technology and algorithms to provide you with an accurate and fair estimate of the value of your diamond.

      Our rough diamond price calculator takes into account all the relevant factors that affect the value of a diamond, including the 4Cs - carat weight, clarity, cut, and colour. We also consider the current market conditions and demand for diamonds to ensure that our estimates are up-to-date and reflective of the current market.

      Our diamond calculator UK is easy to use and understand. Simply input the details of your diamond, and our calculator will provide you with an estimate of its value. We pride ourselves on our transparency and honesty, and our calculator provides a fair and accurate estimate of the value of your diamond.

      Our diamond value calculator UK is based on the internationally recognized GIA (Gemological Institute of America) standards. The GIA is widely recognized as the leading authority on diamond grading and valuation, and our calculator uses their standards to ensure that our estimates are accurate and reliable.

      Our diamond price estimator takes into account all the relevant factors that affect the value of your diamond, including the market demand and trends. We are constantly monitoring the market to ensure that our estimates are up-to-date and reflective of the current market conditions.

      Our diamond calculator price is a quick and easy way to get an estimate of the value of your diamond. We pride ourselves on our exceptional customer service and are always happy to answer any questions you may have.

      In conclusion, if you're looking to sell your diamond, look no further than HowCashForDiamonds.co.uk in London. Our diamond price calculator is tailored to the UK market, and we offer a fair and accurate estimate of the value of your diamond. We are committed to providing you with a human-friendly and stress-free experience, so why wait? Try our diamond price calculator today and see for yourself why we are the best in the business!


      We're proudly accredited by

      The Jewellery Cave group of companies

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