In our engagement rings, we have chosen only to sell diamonds that are of a high quality and that have no obvious flaws. All of our diamonds are conflict-free.
The 5 diamond grades we sell are:
Premium Quality | H/Si Quality | G/Si Quality | G/Vs Quality | E/Vs Quality
Read more about each of these diamond grades below.
HOW DO YOU MEASSURE DIAMOND QUALITY?
We use the GIA International Diamond Grading System. It is based on the 4 Cs – Cut, Colour, Clarity and Carat weight.
This is the worldwide standard for measuring diamond quality. For more information on the GIA 4 Cs diamond grading system click here for further reading.
Premium quality is a great choice in diamonds, because it’s very difficult to spot any imperfections in them. Premium quality diamonds look better than those usually sold on the high street. They represent good value for money.
The colour quality of premium diamonds ranges from H to I. This means that a premium diamond is a white diamond with no colour tint that can be easily noticed by the naked eye. Only when compared side by side with a better quality diamond are the differences noticeable.
The clarity quality of premium diamonds ranges from I1 to I2. “I” is short for “inclusions”. Any imperfections in the diamond can only be noticed if you look very closely at the stone (within 6 inches). With smaller diamonds these imperfections become even harder to notice. I1 is slightly cleaner than I2.
H/Si quality diamonds are one of our usual recommendations for engagement rings. With bright white diamonds that have no visible inclusions, you cannot go wrong. H/Si quality diamond can be said to represent superb value.
The colour quality is H, meaning that this is a white diamond with no colour tint easily noticeable to the naked eye. Only when compared side by side with a better quality diamond are the differences noticeable.
The clarity quality is Si, meaning “slight inclusions”. On this quality diamond, and certainly under 0.50 carat, imperfections are not noticeable to the unaided eye. Only once under a jeweller’s high-powered magnifying glass can these inclusions be detected. You may see this category expressed as SI1 or SI2, with SI1 being slightly cleaner than S2.
For cut, polish and symmetry, we use a minimum of Good/Very Good in all H/Si diamonds over 0.50 carat.
G/Si quality diamonds are an excellent choice for engagement rings. This is a bright white diamond that has no visible inclusions.
The colour quality is G, meaning this is a bright white diamond. Expert knowledge is needed to identify any colour tint. In other words, these diamonds can essentially be considered near colourless.
The clarity quality is Si, meaning “slight inclusions”. On this quality diamond, and certainly at under 0.50 carat, imperfections are not noticeable to the unaided eye. Only once under a jeweller’s high-powered magnifying glass can these inclusions be detected. You might see this category available as Si1 and Si2, with Si1 being slightly cleaner than Si2.
For cut, polish and symmetry, we use a minimum of Good/Very Good in all G/Si diamonds over 0.50 carat.
G/Vs quality is the connoisseur’s choice. If you like to appreciate the finer things in life, this is the diamond for you.
The colour quality is G, meaning this is a bright white diamond. Expert knowledge is needed to identify any colour tint. In other words, these diamonds can essentially be considered near colourless.
The clarity quality is Vs. This is an abbreviation for “very slight”, referring to inclusions, or indeed lack of them. In fact, any inclusions in these diamonds can only be detected with expert knowledge and with the use of a high-powered jeweller’s loupe (magnifying glass). You might see this category available as Vs1 and Vs2, with Vs1 being slightly cleaner than Vs2.
For cut, polish and symmetry, we use a minimum of Good/Very Good in all G/Vs diamonds over 0.50 carat.
E/Vs quality is the diamond expert’s choice. If you want to know that you’re buying a superlative quality diamond that will stand up to professional scrutiny, this is the one for you.
The colour quality is E, meaning this is an exceptionally white diamond. Expert knowledge is needed to identify any colour tint whatsoever, so in essence these diamonds can be considered colourless.
The clarity quality is Vs. This is an abbreviation for “very slight”, referring to inclusions, or indeed lack of them. In fact, any inclusions in these diamonds can only be detected with expert knowledge and with the use of a high-powered jeweller’s loupe (magnifying glass). You might see this category available as Vs1 and Vs2, with Vs1 being slightly cleaner than Vs2.
For cut, polish and symmetry, we use a minimum of Good/Very Good in all E/Vs diamonds over 0.50 carat.
Note – the E/Vs quality is the highest grade of diamond we offer in engagement rings. Although there is one more colour grade (D) that is better, we genuinely feel that qualities higher than E/Vs are not noticeable by anyone except a diamond expert. That’s why we recommend that if you have extra budget available, go for a larger diamond rather than a grade higher than E/Vs.
WE’RE HAPPY TO ANSWER ANY QUESTIONS YOU MAY HAVE
We understand that if you’re buying an item of diamond jewellery, it’s a very important purchase for you – perhaps the most important one you’ll ever make. We’re here to help. If things get a little daunting, the best thing to do is contact us. We’re always happy to chat.
To live chat with us, simply click on the orange tab in the bottom left corner of our website. Alternatively, email us on sales@thediamondstore.com.
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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