Service
Customer Product InformationThis 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)
Add theft, damage & loss Insurance from T H March 
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.
- 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)
- 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.
RING SIZE GUIDE
Your chosen ring size is as personal as your engagement ring or wedding ring. Your ring should sit comfortably on your finger- not so tight it can’t move, not too loose that it could potentially slip off.
To find your perfect ring size, you can request a free plastic ring sizer from Diamond Heaven. This can be with you within a few working days in the UK and approximately one working week overseas. Click below to request your free ring sizer today.
Get your Free Ring Sizer
Fill in the form below to order a FREE ring sizer to measure your ring size & ensure a Perfect fit.
HOW TO FIND OUT A RING SIZE?
If your engagement is a surprise (and let’s be honest, so many are of course!), it can be hard to get the perfect ring size.
Here are a few ways to find the perfect ring size:
- Borrow your partner’s jewellery If you can borrow a ring of your partners without them noticing, we are able to size this and choose a ring size close to this.
- Get friends and family involved! Maybe your partner’s best friend can help find out their ring size for you. Or when asking the parent’s permission, ask them to try on a family ring to size.
- Ask your partner: The easiest way is to ask your partner what their ring size is, if you don’t mind them knowing what your exact intentions are.
- Trace one of their rings: Ensure you make a trace around the inside and outside of the ring a few times to ensure you have an accurate trace. We can then measure the diameter of the ring and come to the closest ring size.
HAVE US CHECK YOUR RING SIZE
You can visit your local Diamond Heaven and one our consultants will be able to take your ring size. If you’ve also got a ring that you want to know the size of this can be done too. You can book an appointment by clicking the button below.
CAN I HAVE MY RING RESIZED AFTER I PURCHASE?
Most of our rings can be re-sized but we do recommend speaking to us beforehand to ensure the design you’ve selected is suitable.
You can get in touch with us on any of the methods below or speak to your local Diamond Heaven store.
INTERNATIONAL RING SIZES
Other countries use a different scale to the U.K; you can use the table below to help you decide which size you need.
← Swipe left & right to view the full table →
| Circumference (mm) | Diameter (mm) | Europe | UK & Australia | US & Canada | China | Singapore & Japan | Hong Kong | Switzerland |
| 44.2 | 14.1 | 44 | F½ | 3 | 6 | 4 | 6 | 4 |
| 44.8 | 14.3 | 45 | G | 5 | 5¼ | |||
| 45.5 | 14.5 | G½ | 3½ | 7 | 7.5 | |||
| 46.1 | 14.7 | 46 | H | 6 | 6½ | |||
| 46.8 | 14.9 | 47 | H½ | 4 | 8 | 7 | 9 | |
| 47.4 | 15.1 | I | 9 | 7¾ | ||||
| 48.0 | 15.3 | 48 | I½ | 4½< | 8 | 10 | ||
| 48.7 | 15.5 | J | 9 | |||||
| 49.3 | 15.7 | 49 | J½ | 5 | 10 | 9 | 11 | |
| 50.0 | 15.9 | 50 | K | 10 | ||||
| 50.6 | 16.1 | K½ | 5½ | 11 | 10 | 12 | ||
| 51.2 | 16.3 | 51 | L | 11¾ | ||||
| 51.9 | 16.5 | 52 | L½ | 6 | 12 | 11 | 13 | 12¾ |
| 52.5 | 16.7 | M | 13 | 12 | ||||
| 53.1 | 16.9 | 53 | M½ | 6½ | 13 | 14.5 | 14 | |
| 53.8 | 17.1 | N | 14 | |||||
| 54.4 | 17.3 | 54 | N½ | 7 | 14 | 16 | 15¼ | |
| 55.1 | 17.5 | 55 | O | 15 | ||||
| 55.7 | 17.7 | O½ | 7½ | 15 | 17 | 16½ | ||
| 56.3 | 17.9 | 56 | P | 16 | ||||
| 57.0 | 18.1 | 57 | P½ | 8 | 17 | 16 | 17¾ | |
| 57.2 | 18.2 | 18 | ||||||
| 57.6 | 18.3 | Q | ||||||
| 58.3 | 18.5 | 58 | Q½ | 8½ | 18 | 17 | 19 | |
| 58.9 | 18.8 | 59 | R | 19 | ||||
| 59.5 | 19.0 | R½ | 9 | 19 | 18 | 20.5 | ||
| 60.2 | 19.2 | 60 | S | 20 | 20¼ | |||
| 60.8 | 19.4 | 61 | S½ | 9½ | 19 | 22 | ||
| 61.4 | 19.6 | T | 21 | 21½ | ||||
| 62.1 | 19.8 | 62 | T½ | 10 | 20 | 23 | ||
| 62.7 | 20.0 | U | 22 | 21 | ||||
| 63.4 | 20.2 | 63 | U½ | 10½ | 22 | 24 | 22¾ | |
| 64.0 | 20.4 | 64 | V | 23 | ||||
| 64.6 | 20.6 | V½ | 11 | 23 | 25 | |||
| 65.3 | 20.8 | 65 | W | 24 | 25 | |||
| 65.9 | 21.0 | 66 | W½ | 11½ | 25 | 24 | 26 | |
| 66.6 | 21.2 | X | ||||||
| 67.2 | 21.4 | 67 | X½ | 12 | 26 | 25 | 27.75 | 27½ |
| 67.8 | 21.6 | Y | ||||||
| 68.5 | 21.8 | 68 | Z | 12½ | 26 | 28¾ | ||
| 69.1 | 22.0 | 69 | Z | |||||
| 69.7 | 22.2 | 70 | 13 | 27 | 30 | |||
| 70.4 | 22.4 | Z+1 | ||||||
| 71.0 | 22.6 | Z+2 | 13½ |
