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


Lab Grown diamonds, also known as man-made diamonds, are identical to Natural diamonds in its chemical properties. The only difference is how the diamonds are created. Whilst Natural diamonds take millions of years to develop beneath the Earth’s crust, Lab Grown Diamonds are created in highly controlled laboratory environments that imitate the conditions a natural diamond is created in a fraction of the time.

How are Lab Grown Diamonds Made?

Lab Grown diamonds are created using either two forms of advanced scientific technology- High Pressure High Temperature (HPHT) or Chemical Vapour Disposition (CVD).

The traditional HPHT method mimics the extreme heat and pressure conditions deep within the Earth’s crust that creates natural diamonds. A diamond seed is placed into a piece of pure carbon, where scientist can then impose high temperatures and pressures in a controlled environment, mimicking the same process a natural diamond undertakes to grow.

CVD is a fairly modern technology to produce Lab Grown diamonds but has proven to be highly successful. CVD diamond growth takes place within a vacuum chamber.

A diamond seed from a natural diamond is placed within the chamber, which is then filled with hydrogen and carbon containing gas, such as methane.

A source of energy - in this case, a microwave beam- breaks down the gas molecules and the carbon atoms then attach to the diamond seed. The diamond seed will need to be polished throughout the process, as rough edges of black graphite can appear. This is a quick process that does not diminish the quality of the diamond, which will be ready within a matter of weeks.

what IS the difference between Lab & Natural Diamonds?

There are barely any visible differences when comparing a Lab Grown Diamond to a natural Diamond.

Lab Grown Diamonds have the same light performance as a natural diamond, the same durability, the same hardness and most importantly, can be certified by established diamond grading labs such as GIA and IGI.

The only way to tell a difference between the two diamonds is with using specialised equipment to identify the different crystal growths.

Full RuboverLAB GROWN
Full RuboverNATURAL

Are Lab Grown Diamonds certified?

Full Rubover

At Diamond Heaven, all our Lab Grown Diamonds come with certification.
The process of diamond grading is the same for a Lab Grown diamond as it is for a Natural Diamond.

The grading process focuses on the 4 C’S, cut, clarity, colour, and carat. Each step of the grading process is taken very seriously to ensure all diamonds are given the correct grade. The certificate will then state if any further heat treatment has been used on the diamond and whether it is a HPHT diamond or CVD diamond.

At Diamond Heaven, we sell GIA and IGI certified Lab Grown Diamonds. However, please note GIA certificates are online documentation only.

This can be downloaded for your personal records. IGI Lab Grown Diamonds will come with a physical certificate.

Are Lab Grown Diamonds Ethical?

As a whole Lab Grown diamonds are seen as a more ethical choice for your engagement ring. There is no damage to the environment as they do not require mining to produce.

The working conditions for Lab Grown diamonds are far more ethical, as we can be entirely sure where the diamond has come from and be sure of the human rights and working conditions for the individual involved.

Lab Grown diamonds still use a considerable amount of energy, however this is much lower than mining a Natural Diamond.

In recent years, diamond mines have made critical changes to become more ethically conscious. All legitimate diamond mine companies abide to the Kimberley Process, ensuring the legitimacy of diamonds purchased and to ensure they have not been used to profit in conflict.

The most significant difference between Lab Grown Diamonds and Natural Diamonds is the price. You will find that a Lab Grown Diamond can be 40-50% cheaper than a Natural Diamond, meaning you can spend less money on higher specifications in a Lab Grown Diamond than that of a Natural Diamond.

If you are looking for a diamond as an investment, then we would recommend a Natural Diamond. All the diamonds that will ever exist have already been created in the Earth’s crust. Once the mines are empty, there will be no more diamonds left to mine. The natural beauty and quality of a natural diamond also make it a rare and valuable gemstone.

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