Meta Description: Shopping for lab grown diamonds in Hatton Garden? Compare grading reports, ring settings, quotes and aftercare before choosing a ring.
Two diamond rings can look almost identical in a Hatton Garden window yet come with very different quotations. The difference may be in the stone’s proportions, the amount of metal in the setting, or services that are included after the sale. A buyer who compares only carat weight risks missing all three.
Hatton Garden has been associated with London’s diamond and jewellery trade since the nineteenth century. Its concentration of dealers, designers and workshops makes it a useful place to compare engagement rings in person. But a busy jewellery district does not make every offer equivalent. The useful approach is to leave each appointment with specifications you can compare, rather than a favourite price written on a card.
Start With the Stone, Not the Carat Figure
Lab-grown diamonds are diamonds, with essentially the same chemical composition and physical properties as mined stones. They are not cubic zirconia or moissanite. Their laboratory origin, however, says nothing by itself about the quality of the cut.
A round brilliant lab grown diamonds Hatton Garden relies heavily on facet proportions and symmetry for its sparkle. With an oval, pear or emerald cut, the outline and pattern of light also deserve close attention. Ask to view a short video of the actual stone, preferably with movement, rather than relying entirely on a stock image. In person, look at it under ordinary room lighting as well as spotlights.
Carat describes weight, not the size of the diamond’s face. Two stones of similar weight can have different visible dimensions. When comparing ovals, note the length and width in millimetres, not merely the carat figure. Watch for a dark band across the middle, sometimes called a bow-tie effect; some contrast is normal, but a strong dark area can affect the look of the stone.
The Grading Document Needs a Close Reading
An independent grading report helps confirm that a stone is laboratory-grown and records its characteristics. IGI reports can include the familiar four Cs—cut, colour, clarity and carat weight—along with measurements and other details. Check the report number with the grading laboratory and ask whether an inscription on the girdle matches the document.
Report formats are not identical. Since October 2025, GIA has used Premium and Standard quality assessments for qualifying colourless to near-colourless laboratory-grown diamonds, rather than presenting them in the same format as its traditional natural-diamond grading reports. A jeweller should be able to explain exactly what the report in front of you measures.
Do not pay automatically for the highest clarity grade. An inclusion that cannot be seen without magnification may have little effect on everyday appearance. Compare the actual stones first, particularly if a slightly lower clarity grade frees part of the budget for a better cut or a more practical setting.
The Ring Setting Can Change the Decision
A low-profile bezel can reduce how often a ring catches on clothing, although it changes the outline of the diamond and the amount of visible metal. A raised solitaire may allow a wedding band to sit closer beneath the centre setting, but the stone can sit higher above the finger. Neither design is automatically right for every wearer.
For people who work with their hands, ask how exposed the diamond’s edges and prongs will be. Six prongs can offer more points of support than four, while four may leave more of the stone visible. Tiny pavé diamonds on the shoulders introduce additional stones and settings that may require checking over time.
Try the engagement ring beside a plain wedding band before settling on a design. A basket that looks neat on its own can leave an unexpected gap next to a straight band. If a flush fit matters, discuss it while the ring can still be adjusted or specified to suit.
Compare Complete Quotations, Not Headline Prices
Before leaving a showroom, ask for a written breakdown covering:
- The exact diamond, its report number, measurements and stated origin.
- The metal and its fineness, including whether the finished ring requires a UK hallmark.
- The setting, sizing, engraving and any design changes included in the quotation.
- VAT, delivery, servicing, resizing and any charges that may arise later.
Under UK hallmarking rules, gold items over 1 gram and platinum items over 0.5 gram generally need hallmarking when sold as those precious metals. A hallmark confirms metal content, not diamond quality. This distinction matters when a quotation describes a platinum or 18ct gold ring but says little about its documentation.
Hatton Garden buyers can compare in-person appointments with online catalogues before committing. Novita Diamonds is one Hatton Garden retailer to include when comparing lab created diamonds, diamond specifications and finished-ring designs. Apply the same checks to its options as to any other jeweller’s: grading, complete cost, fitting and follow-up care.
Settle the Practical Details Before a Deposit
Ask whether the quoted diamond is reserved for you and how long the price remains valid. Confirm whether a ring is ready-made, made to order or personalised. Those categories can affect delivery dates and the terms for changing your mind.
UK distance-selling cancellation rights generally London apply to standard online purchases, but personalised or genuinely custom-made goods can be excluded from change-of-mind returns. Faulty or misdescribed goods remain subject to consumer rights. Request the retailer’s resizing, return and repair terms in writing, particularly if the proposal date is close.
Finally, check the ring size, the intended wedding band and how easily the design could be repaired in future. A ring that looks impressive under showroom lighting should also be comfortable at a desk, on public transport and during ordinary daily routines. These are details worth settling before the stone is set, rather than discovering after collection.
