Step 1
Design & Selection
We finalise your design and hand-pick the certified center stone.
Save 20%An Asscher cut lab grown diamond lifted over a hidden halo of small round diamonds, on a clean tapered band. The Asscher is a square step cut with cropped corners and long parallel facets that create the hall of mirrors effect, a series of concentric squares drawing the eye down into the stone. Because a step cut works by reflection rather than scatter, it benefits enormously from being raised, and the concealed halo does exactly that, adding a line of light beneath the stone that is invisible from above. Every diamond is a laboratory grown diamond, identical in carbon structure, hardness and brilliance to a mined diamond, graded E colour and VVS2 clarity. Each ring is made to order in our own Surat workshop and ships with a free IGI certificate for the centre stone.
This ring is made to order in ten metal choices, so you can match it to jewellery you already wear.
All gold options are solid gold, never plated or filled. White gold is finished with rhodium for a bright white surface and keeps the focus entirely on the step cut facets. Yellow and rose gold frame the square outline more sharply and warm the light coming off the hidden halo.
Choose your ring size at checkout. We make every size from US 3 to US 13, including half sizes, at no additional cost. If you are unsure of the size, order anyway and contact us after checkout, we will help you confirm it before the ring goes into production.
Want the hidden halo removed for a pure solitaire, pave added along the shoulders, a wider or knife edge band, a different centre shape, engraving inside the shank, or a matching wedding band that sits flush against this one, we can make it. For any other customization request please contact us at https://mapplegems.com/pages/contact and we will quote it for you.
An Asscher is a square step cut, meaning its facets run in long straight lines parallel to the edges of the stone rather than in the triangular pattern of a brilliant. The corners are cropped, so the outline is an octagon that reads as a square. Looking into an Asscher you see a series of concentric squares receding toward the centre, an effect jewellers call the hall of mirrors. It was first cut in 1902 and is closely associated with Art Deco design.
A hidden halo is a ring of small diamonds set horizontally around the basket underneath the centre stone, facing outward rather than upward. From directly above you do not see it, so the square outline of the Asscher stays completely clean. From the side and from the wearer's own eye level it catches light and lifts the stone visually.
Yes. A lab grown diamond is real diamond. It has the same carbon crystal structure, the same hardness of 10 on the Mohs scale, the same refractive index and the same fire and brilliance as a mined diamond. The only difference is that it was grown in a controlled laboratory over a few weeks instead of underground over billions of years. No jeweller can tell the difference by eye, only specialist equipment reading growth patterns can separate the two.
Step cuts have large open facets and no busy sparkle to distract the eye, so anything inside the stone is easier to see than it would be in a brilliant cut. That is why we set only VVS2 clarity in this design. At VVS2 any inclusions need 10x magnification to find, so the open facets stay clean.
Yes. Every ring ships with a free IGI certificate for the centre stone. IGI is the International Gemological Institute, one of the largest independent diamond grading laboratories in the world. The certificate confirms the carat weight, the E colour grade, the VVS2 clarity grade and the laboratory grown origin. There is no extra charge for the certificate.
Both are step cuts with cropped corners, so they share the same facet style. The difference is the outline. An emerald cut is rectangular and elongates the finger, while an Asscher is square and sits more compactly. An Asscher also tends to be cut with more depth, which gives it more brightness through the centre than a shallow emerald.
E colour is the second highest grade on the diamond colour scale and sits inside the colourless range, so the diamond looks bright white with no warm or yellow tint. VVS2 means very very slightly included, the second highest clarity tier. Any inclusions are so small that a trained grader needs 10x magnification to find them and they are completely invisible to the naked eye.
A lab grown diamond gives you a materially identical stone for a fraction of the price of a mined equivalent, which is what makes a 4 carat or 5 carat Asscher centre realistic on a normal budget. That matters here because a step cut shows its size plainly, there is no scattered sparkle to disguise a smaller stone. Because the origin of every stone is documented from the moment it is grown, a lab grown diamond is conflict free by definition. Growing a diamond also avoids the open pit excavation, land disruption and water use that mining a comparable stone requires, so the environmental cost is considerably lower.
Mapple Gems is a made to order fine jewellery workshop based in Surat, India, the city that cuts and polishes the majority of the world's diamonds. We design and hand finish every lab grown diamond piece in house rather than reselling stock, which is why every ring on this store can be adjusted to the metal, carat weight and size you actually want. Our team works only with laboratory grown and certified stones, and every order is inspected and photographed before it leaves the workshop. For questions about this ring or a fully custom commission, reach us at https://mapplegems.com/pages/contact.
Pay over time with Affirm, Shop Pay or Klarna — 0% APR options available at checkout. All major cards and PayPal accepted.
Compare ring sizes across international standards — match your size from any region.
| USA · Canada | UK · Australia Ireland · NZ |
Japan · India China · S. Africa |
Spain · Italy Neth. · Switz. |
Inside Ø & Circumf. (mm) |
|---|---|---|---|---|
| 4 | H | 7 | 6.75 | 14.88 & 46.80 |
| 4.25 | H.5 | 7.5 | 15.09 & 47.40 | |
| 4.5 | I | 8 | 8 | 15.29 & 48.00 |
| 4.75 | J | 8.75 | 15.49 & 48.70 | |
| 5 | J 1/2 | 9 | 9.25 | 15.70 & 49.30 |
| 5.25 | K | 10 | 15.90 & 50.00 | |
| 5.5 | K 1/2 | 10 | 10.5 | 16.10 & 50.60 |
| 5.75 | L | 11.25 | 16.31 & 51.20 | |
| 6 | L 1/2 | 11 | 11.75 | 16.51 & 51.90 |
| 6.25 | M | 12 | 12.5 | 16.71 & 52.50 |
| 6.5 | M 1/2 | 13 | 13.25 | 16.92 & 53.10 |
| 6.75 | N | 13.75 | 17.12 & 53.80 | |
| 7 | N 1/2 | 14 | 14.5 | 17.32 & 54.40 |
| 7.25 | O | 15 | 17.53 & 55.10 | |
| 7.5 | O 1/2 | 15 | 15.75 | 17.73 & 55.70 |
| 7.75 | P | 16.25 | 17.93 & 56.30 | |
| 8 | P 1/2 | 16 | 17 | 18.14 & 57.00 |
| 8.25 | Q | 17.5 | 18.34 & 57.60 | |
| 8.5 | Q 1/2 | 17 | 18.25 | 18.54 & 58.30 |
| 8.75 | R | 19 | 18.75 & 58.90 | |
| 9 | R 1/2 | 18 | 19.5 | 18.95 & 59.50 |
| 9.25 | S | 20.25 | 19.15 & 60.20 | |
| 9.5 | S 1/2 | 19 | 20.75 | 19.35 & 60.80 |
| 9.75 | T | 21.5 | 19.56 & 61.40 | |
| 10 | T 1/2 | 20 | 22 | 19.76 & 62.10 |
| 10.25 | U | 21 | 22.75 | 19.96 & 62.70 |
| 10.5 | U 1/2 | 22 | 23.25 | 20.17 & 63.40 |
| 10.75 | V | 24 | 20.37 & 64.00 | |
| 11 | V 1/2 | 23 | 24.75 | 20.57 & 64.60 |
| 11.25 | W | 25.25 | 20.78 & 65.30 | |
| 11.5 | W 1/2 | 24 | 26 | 20.98 & 65.90 |
| 11.75 | X | 26.5 | 21.18 & 66.60 | |
| 12 | X 1/2 | 25 | 27.25 | 21.39 & 67.20 |
| 12.25 | Y | 27.75 | 21.59 & 67.80 | |
| 12.5 | Z | 26 | 28.5 | 21.79 & 68.50 |
| 12.75 | Z 1/2 | 29 | 22.00 & 69.10 | |
| 13 | 27 | 29.75 | 22.20 & 69.70 | |
| 13.25 | Z1 | 30.5 | 22.40 & 70.40 | |
| 13.5 | 31 | 22.61 & 71.00 | ||
| 13.75 | Z2 | 31.75 | 22.81 & 71.70 | |
| 14 | Z3 | 32.25 | 23.01 & 72.30 | |
| 14.25 | 33 | 23.22 & 72.90 | ||
| 14.5 | Z4 | 33.5 | 23.42 & 73.60 | |
| 14.75 | 34.25 | 23.62 & 74.20 | ||
| 15 | 34.75 | 24.23 & 76.10 |










Every piece is made to order — from first sketch to the final polish.
Step 1
We finalise your design and hand-pick the certified center stone.
Step 2
Master jewelers cast and shape the band to exact specifications.
Step 3
Each stone is hand-set and the piece is polished to a mirror finish.
Step 4
Final inspection, certification, and luxury gift packaging.
Real diamonds grown in a lab — chemically and optically identical to mined diamonds, graded on the same 4Cs, at a lower price and conflict-free.
All metal is solid (10K/14K/18K gold or platinum), never plated.
Yes — share your idea and we'll craft it with a CAD preview before production.
Yes, IGI/GIA certificates ship with every lab-grown diamond.
Made-to-order pieces ship in about 7–8 business days with insured tracking. Free worldwide.
Yes, we ship worldwide. Import duties may apply by country.
All major cards, PayPal, and installments via Shop Pay / Klarna / Afterpay.
30-day return or exchange on eligible items. Custom/engraved pieces are non-returnable except for defects. Refunds issued ~2 days after inspection.
Yes — one complimentary resize after delivery; contact us with your new size.
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