IGI (International Gemological Institute) is an extremely well respected and world-renowned laboratory which specialises in grading diamonds and precious gemstones.
An IGI certificate is a real 'seal of quality'. This certificate will assure you that the diamond you have chosen is nothing less than it should be.
The value of a diamond is determined through an intricate process during which its gemmological makeup, rarity and quality are examined. This is the only real way of separating one diamond from another. Experts at gemmological laboratories, such as the IGI, use powerful analytical tools and have years of experience in grading diamonds.
The diamond you are buying has been through a rigorous testing process and the independent report/certificate you receive with your jewellery confirms its true qualities.
These certificates can also be validated on the IGI website. By entering your diamond certificate number on the IGI website, you will be shown a verified copy of the report that you have.
Does this make an IGI certified diamond more valuable?
Yes, a diamond with an IGI certificate is much more valuable and sought after than one without.
The IGI report, together with the online validation process, gives you peace of mind when you purchase your diamond. For any prospective buyers or new owners, it’s confirmation of the diamond’s authenticity and quality.
Is This Diamond Conflict Free?
Yes. All the diamonds we sell, including our IGI certified range, are conflict free.
Are IGI certified diamonds any different to other diamonds?
Yes, an IGI certified diamond is exactly what it says it is. Non-certified diamonds are not independently examined. Therefore, you must rely on the retailer’s opinion.
Why are IGI certified diamonds more expensive than SKD certified diamonds?
Because the IGI laboratory is an international, globally recognised laboratory. SKD is a London-based laboratory.
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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