Frequently Asked Questions

Q: Are you a member of the British Jewellers' Association?

Q: Do you have any feedback from previous customers?

Q: Why are your products so much cheaper than identical items I have seen in high-street jewellery shops?

Q: Your rings are all listed as size N, but my ring size is different?

Q: How do I find out my ring size?

Q: Is your jewellery made of solid gold / platinum and is it hallmarked?

Q: Can items be made in a different metal from that listed?

Q: I haven't bought a diamond before and I'm confused about diamond colour and clarity.
Can you help?

Q: Are the diamonds used natural and conflict free?

Q: Which laboratory certifies your diamonds and jewellery?

Q: Will I get an insurance valuation certificate?

Q: Do you custom-make jewellery?

Q: Can I come and view jewellery, or loose diamonds, in person before buying?

Q: Can I buy directly from you, or do I have to buy through eBay?

Q: How can I pay?

Q: I don't live in the UK. In which currency should I pay you?

Q: Can I pay in instalments?

Q: How long will my order take?

Q: How is my jewellery delivered and when should I expect to receive my order?

Q: What happens if I am out when my (UK) parcel is delivered?

Q: Can orders be placed from abroad?

Q: I'm worried about my partner signing for the parcel and spoiling the surprise. Can this be avoided?

Q: Can I return an item?

A: Yes, we are a member of the BJA. Our British Jewellers' Association number is 44575 and we are listed under Charles Bloomstein's name.

A: Yes, we have been trading on eBay since the year 2000, during which time we have received almost 10,000, 100% positive feedback comments. A track record, of which we are justifiably proud.
Here is the link directly to it: Knuckerbling Feedback


  • We do not incur all the overheads associated with running a physical jewellery shop
  • We do not attach large mark-ups to our prices, preferring to work on a low profit : high turnover basis instead
  • Charles has excellent trade contacts, so he can buy stock at lowest possible prices

A: Our rings are generally stocked size N. However, a ring can be made to order in any size: just let us know the size required with your payment.
It would take about 4 - 5 weeks to be made, but there's no additional cost to you.
Alternatively, our jeweller can re-size a ring by up to three sizes larger or smaller for £30. This would take about 7 days. (Please note that full eternity rings cannot be re-sized.)

A: Just email Helen at to ask for a ring size gauge to be posted to you

A: All jewellery is made of either sold gold, or platinum. It is stamped with the maker's mark and hallmarked at the British Assay Office.

A: All items can be made in white, yellow, or rose gold, or platinum.
If the metal you like is not listed, it can be made to order for you and this work would take about 4 - 5 weeks.
There may (though not necessarily) be a surcharge, depending on the metal you choose. So, please ask before ordering.

A: Yes. Email your questions to Helen at Having worked for Knuckerbling since 2000, she can answer your questions and explain how a diamond’s characteristics affect its appearance and value. Understanding this information makes choosing the right diamond, within your budget, much easier.

A: All Knuckerbling jewellery contains only genuine, natural diamonds, which have been mined from the earth.
They are not treated or enhanced in any way.
All Knuckerbling diamonds are sourced from suppliers who guarantee to sell only conflict free stones.

A: We use the world's most trusted names in diamond grading and gemstone identification. Knuckerbling diamonds are certificated by either EDR, GIA or IGI.

A: All items come with two insurance valuation certificates: one for you and one for your insurance company.

A: We offer a bespoke design service. Charles or Danielle our GIA-qualified gemmologist is available by appointment. We will advise you throughout the process. In particular, we can offer advice on all aspects of diamonds (cut, colour, clarity, finish-grade and carat-weight), choice of metal, settings and design.
Our own jeweller is highly-skilled: He can replicate almost any design of your choice.

A: We have a trade outlet in the North Laine area of Brighton and much (although not all) of our stock is available for viewing there by appointment.
To arrange an appointment, please call 01273 605322 during office hours (allowing at least 24 hours notice). Please also confirm which item(s) you are interested in, by giving the relevant eBay auction number(s) if available.

A: If you would like to buy directly from us, we are able to offer significant discounts on our prices. You can still pay with PayPal (if preferred) and be covered by their Buyer Protection Scheme. Terms of sale are exactly the same for all customers, regardless of whether you buy directly from us, or via eBay

A: We accept the following payment methods:

  • bank transfer
  • credit / debit cards (except American Express)
  • cheque
  • PayPal
  • banker’s draft
  • postal orders; and
  • cash sent by insured post

A: We request all payments to be made in Pounds Sterling (GBP).
If you are paying with PayPal, this is easy to do, by simply selecting GBP as your payment currency.
The conversion is automatically done for you at the current rate of exchange.

A: Yes, we can accept payment in instalments and there is no additional charge for this. Please contact us to arrange a payment plan.

A: Most items are already in stock and we aim to send them out within 2 - 3 working days however please refer to delivery times listed on each individual item, as this may vary. Items made to order will be assessed and time scale quoted individually. If an item is not in stock, or there will be any delay, we will notify you via email in the first instance.

A: All pieces are sent by Royal Mail special delivery using the appropriate level and value of insurance cover. Items to be delivered outside the UK will be sent using Royal mail international tracked and signed for. Any other courier service will be assessed individually.
Special Delivery is signed for and guaranteed to be delivered by 1pm the following working day after despatch.

A: If you are not in when a Special Delivery attempt is made, a “While You Were Out” card will be left. To claim your parcel, take the card to the relevant Post Office sorting office, along with identification and proof of your address.
Alternatively, you can call the number on the card to arrange a convenient re-delivery date. You can also do this online at

A: Orders can be placed from abroad and you can place your order in the normal way. They will be sent by Royal Mail International tracked and signed for. If you require any other delivery method please contact us and charges will be assessed individually. Delivery times will vary on destination and dictated by delivery company.

A: Our parcels are very well-sealed and impossible to open without completely ruining the seal.
There is nothing on the outside of the parcel to indicate jewellery.

If you would prefer a parcel to be sent to a different address, this can be arranged.
Please note, however, that if a credit or debit card is used as your payment method, we must send the parcel to the cardholder’s registered address.

With PayPal, you must select a delivery address from your list of addresses within your PayPal account.
Simply adding a different address as a “note to seller” will not be acceptable.

A: Items may be returned for exchange or a full refund within 14 days of purchase, unworn and as new. Pieces made specifically to commission cannot be returned, due to their individual nature.