DIAMOND CERTIFICATES
A diamond certificate is a report created by a team of diamond experts in a gemmological laboratory.
Read more about each of these certificates below.
We provide 4 different certificates with our Jewellery, depending on the piece. These certificates are as follows:
Certificate of Valuation Certificate of Authenticity SKD Certificate Independent Certificate
A diamond certificate includes a detailed and impartial expert assessment of the diamond’s clarity, colour, cut, carat weight and other characteristics.
You may sometimes also hear a diamond certificate referred to as a diamond grading report, diamond quality document or diamond dossier.
The intention of a diamond certificate is to give you a thorough report on the diamond you have purchased. It confirms the diamond’s quality and authenticity and provides proof of your ownership.
The certificate available for your piece is indicated on the product page.
CLICK HERE TO READ OUR FULL ARTICLE ON CERTIFIED DIAMONDS


CERTIFICATE OF VALUATION
All of our jewellery comes with a Certificate of Valuation. This shows the recommended retail price (RRP) for the item, the name and address of the person who ordered it and the date of purchase.
The main purpose of this certificate is to prove ownership for insurance companies.
CERTIFICATE OF AUTHENTICITY
All our 18K & Platinum diamond and gemstone jewellery comes with The Diamond Store Certificate of Authenticity, or a diamond certificate (such as an SKD, GIA or IGI certificate).
This certificate shows an image and gives in-depth details of the jewellery that you have purchased. It also includes your name, the recommended retail price (RRP) for the item and a unique certificate number.


INDEPENDENT SKD CERTIFICATE
For all 18K and Platinum solitaire engagement rings, solitaire pendants at 0.25 carat and above, and diamond studs where each earring is over 0.25 carat or above, we provide an SKD certificate.
The SKD report is an in-depth report on the specific diamond that you have purchased. It acts as your proof of ownership and attests to the diamond’s authenticity and quality.
INDEPENDENT CERTIFICATES
For all 18K and platinum engagement rings with a carat weight over 0.5 carat, we provide an independent certificate.
The certificate is issued by one of the following official organisations: Gemological Institute of America (GIA), International Gemological Institute (IGI) or an independent SKD Certificate.

The purpose of these certificates is to provide an in-depth report on the diamond that you have purchased. They also act as proof of ownership, diamond authenticity and quality.
We want you to feel completely confident when you shop with us. That’s why we offer FREE 30-day returns for refunds and 60-day exchanges across the UK and Northern Ireland.
If you’ve ordered a ring smaller than a size J or larger than a size Q, don’t worry — these are custom sizes, but we’re still happy to offer a free exchange or resizing if the fit isn’t quite right.
Changed your mind? No problem — you can cancel your order anytime before it’s been dispatched.
Just reach out to our friendly team via Live Chat, by email at customerservice@thediamondstore.com, or give us a call on 0345 084 1200 (or +44 345 084 1200 if calling from outside the UK). Please have your order number handy to help us assist you as quickly as possible.
Please note that for rings smaller than size J or larger than size Q, the width may vary slightly (up to 10%) due to the crafting process. If you need any adjustments, we’re happy to help.
If your item arrives damaged or defective, we’ll make it right — fast. We’ll either repair or replace it at no cost to you, or provide a refund once it’s been assessed by our head jeweller.
Our standard returns policy is 30 days to return, and 60 days to exchange.
We stand by the quality of our jewellery. That’s why all our pieces come with a 5-year warranty against defects in materials or craftsmanship. Every item is also fully hallmarked according to UK legislation, confirming its authenticity and origin.
Once we’ve received and inspected your returned jewellery, we’ll process your refund right away and email you to confirm. Depending on your bank or payment provider, it may take 3 to 5 working days to show up on your statement.
We’ll always refund you via the same method you used to make your purchase — whether that was credit or debit card, PayPal, Pay4Later Finance, bank transfer, or another option.
To avoid delays, make sure to include the returns label print-out with your parcel. This helps us identify your return quickly.
We’re proud to say that all our diamonds are conflict-free and fully compliant with United Nations regulations. When you buy from us, you’re choosing ethical beauty.
We’re here whenever you need us.
📧 Email us: customerservice@thediamondstore.com or returns@thediamondstore.co.uk
📞 Call us: 0345 084 1200 (UK) or +44 345 084 1200 (International)
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