Sale Now On - 15% off Made to Order items and 30% off Stock Items* - Terms Apply

Sale Now On - 15% off Made to Order items and 30% off Stock Items*- Terms Apply


This insurance is optional and will meet the demands and needs of a UK resident requiring insurance for jewellery or watches in the United Kingdom, Channel Islands and Isle of Man plus up to 30 consecutive days elsewhere in the world any one trip.

The insurance is administered by T H March & Co. Limited, Hare Park House, Yelverton Business Park, Yelverton, Devon, PL20 7LS, and they are authorised and regulated by the Financial Conduct Authority (FCA). This may be checked on the Financial Services Register on the FCA’s website.

In the unlikely event that you may wish to make a complaint, this should be directed to T H March. The complaints procedure is detailed in your insurance documentation.

It is important you read the certificate as this details the terms, conditions and any restrictions in cover.

Click here to download the insurance product information document (PDF)

Protection your jewellery deserves

The insurance value is higher than our selling price and is the estimated replacement cost if our Diamond Heaven discount were no longer available at the time of a claim.

1 year cover for £62.73 inclusive of IPT

3 year cover for £114.74 inclusive of IPT

Our UK customers can insure their purchase with MarchGuard cover from T H March, providers of specialist jewellery and watch insurance since 1887.

Main Policy Benefits
  • No excess on claims
  • Simple and easy to arrange
  • Accidental loss*
  • Accidental damage*
  • Theft cover*
  • Worldwide cover (up to 30 consecutive days abroad)
  • All claims are processed through Diamond Heaven (repair or replacement)
  • For 3 year policies, protection is included against price inflation on replacement items (see certificate terms for details)

* Subject to terms and conditions of the policy

Click here to view / download the insurance product information document (PDF)
Click here to view / download the full policy wording document (PDF)

Please be aware:
  • This insurance is for UK residents only
  • There is no cover for wear and tear
  • There is no cover for items left in unattended baggage or in an unattended vehicle
  • There is no cover for any free gifts or accessories that may have come with the purchase
  • There is a 14-day cooling off period
  • This insurance is NOT renewable after the initial term
  • The policy wording provides full details of cover and exclusions and you are requested to read this.

Important notice: Whilst many home insurance policies may cover certain pieces of jewellery or watches we would advise all customers to check their policies closely. Certain household policies have restrictions on watch and jewellery cover, and may include limitations such as, no accidental damage cover, no cover outside of the home or cover for holidays abroad. They may also restrict your choice of jeweller for repair or replacement. In the event of a household insurance claim, you may be expected to pay an policy excess and any claims made may affect your future premiums.

Diamond Education Guide from Diamond Heaven Diamond Education Guide from Diamond Heaven


At Diamond Heaven, we understand our customers require peace of mind when buying a beautiful piece of jewellery. We want customers to be confident that all diamonds sold by Diamond Heaven are the quality advertised. Therefore, all our jewellery comes with diamond certification as standard.

What is a Diamond Certificate?

A Diamond certificate is a report created by a team of gemologist to evaluate the quality of a diamond. They are also known as a Diamond Grading Report, a Diamond Dossier, and a Diamond Quality document. It is an impartial documentation from a highly trained team of gemologists, giving an impartial assessment on each diamond. During the grading process, the 4 C’s (colour, clarity, carat, cut) are strictly assessed using jeweller’s loupes, microscopes, and other industry standard tools.

Why is Diamond Certificate important?

A diamond certification is your proof of purchase for your chosen gem. Like a snowflake, no two diamonds are the same, so this should be recognised by the diamond grading laboratories. A diamond certificate is also required to ensure your jewellery is insured for the correct value with your home insurance. If a diamond is purchased without certification, it will not only be hard to insure the item but there will also be no way of proving the quality of the diamond. A diamond certificate is your peace of mind during the final stages of the purchasing process.



Our diamonds are certified by the world’s leading gemological laboratories. We offer our customers the following certifications:

  • GIA (Gemological Institute of America)
  • IGI (International Gemological Institute)
  • GIE (Gemological Institute of Europe)
  • IDGL- Secondary Level of Certification
  • GIA (Gemological Institute of America)

Established in 1931, GIA is the world’s foremost authority on diamonds. They revolutionised the grading of diamonds by creating the 4 C’S (Colour, clarity, carat, cut) that all diamond graders follow as standard for evaluating diamond quality to this day.

Since January 2006, GIA laser inscribe many of their diamonds with the matching certificate number, giving customers that extra reassurance the diamond matches the grading on the certificate. A diamond loupe of x20 magnification or microscope is required to see the inscription on the girdle of the diamond, therefore not effecting the brilliance and quality of the gemstone.

For more information about the GIA, please click here to visit their website.

  • IGI (International Gemological Institute)

Established in 1975, IGI is one of the oldest diamond laboratories in Antwerp. They are one of the largest grading laboratories in the world, with offices in Antwerp, New York, Honk Kong, Mumbai, Bangkok and many more. IGI diamonds are laser inscribed to ensure the diamond in question matches the grading certificate perfectly.

IGI are also the leading certification for Lab Grown Diamonds, ensuring quality and peace of mind with each diamond.
To understand more about IGI diamonds, please visit their website by clicking here.

What is the Secondary Level of Diamond Certification?

As well as our GIA/IGI/AGI Certification, we also offer a secondary diamond certification called IDGL. Instead of purchasing one certified diamond, we will purchase a pack of diamonds that usually contains 50-100 stones. For example, they may be marked SI clarity, D-G colour, 0.50-0.58ct.

We will then inspect each individual diamond and select the best stones from this pack to be sent to the IDGL laboratory to be independently certified.We will receive these diamonds back all individually certified with all the relevant documentation.

The main advantage of buying diamonds like this is the price point. By buying diamonds in a parcel, we can purchase at a set price, regardless if it is an SI1 or an SI2 clarity, or a D or G in colour. We are then able to price these diamonds far more competitively against other certifications, passing the price savings to our customers.

Which Diamond Certificate is for me?

When choosing the perfect diamond, the certificate can be a difficult decision to make. With so many choices and with a similar combination of letters, it’s easy to get confused about which certification board to go for. At Diamond Heaven, we will always discuss certification options with our customer and ensure that they choose the right diamond certification for their needs. However, we hope this section will help make the decision a bit easier for our customers.


The most trusted and well-known diamond laboratories globally are:

  • Gemological Institute of America (GIA)
  • International Gemological Institute (IGI)
  • Hoge Raad voor Diamant (HRD)
  • European Gemological Laboratory (EGL USA)
  • GIE (Gemological Institute of Europe)

Out of the five mentioned organisations, the three we recommend at Diamond Heaven are:

  • GIA
  • IGI
  • GIE

Each of these diamond laboratories have their own format of grading, whether this is seen in the layout of the certification, or the tools used to grade the diamonds.

As each diamond laboratory has its own grading system, it is common for there to be a difference when comparing to each other. There can sometimes be a difference in a colour and clarity grading, but again this is rare.

The main thing to remember when choosing a diamond is quite simple; do you love it? Will you wake up every day and still lose your breath every time you look down at your engagement ring? Will you still love it in 10 years time? At Diamond Heaven, our goal is to ensure you are 100% satisfied with the diamond you purchase.

Our Sales Executives are on hand to help with any queries and guide you on your journey to your perfect diamond engagement ring.



At Diamond Heaven, we do not recommend purchasing an uncertified diamond from 0.30ct and over.

For diamonds under 0.30ct, then a jewellery appraisal or jewellery valuation should be given with the diamond jewellery to be covered for replacement costs under your insurance.

There is also no guarantee an uncertified diamond is the quality it has been sold at, potentially leaving you with an over priced and under quality diamond that is not insurable. If you have any questions, please do not hesitate to contact our sales team at [email protected].

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