Step 1
Design & Selection
We finalise your design and hand-pick the certified center stone.
Save 20%An elongated cushion cut lab grown diamond in a four claw head, flanked by a substantial round brilliant either side, on a plain polished band. Most trilogies use small angular sides that serve the centre stone. These do not. The rounds are large enough to be read as diamonds in their own right, and because they are circular against a rectangle they create a deliberate contrast of shape rather than a continuation of it. The eye moves across three distinct stones instead of one wide block. It is the oldest form of the three stone ring and still the most balanced, which is why it works on a bare shank with nothing else to support it. E colour, VVS2 clarity throughout, free IGI certificate for the centre stone. Made to order in Surat in ten metals and four carat weights.
Available in 925 sterling silver, 10K yellow gold, 10K rose gold, 10K white gold, 14K yellow gold, 14K rose gold, 14K white gold, 18K yellow gold, 18K rose gold and 18K white gold. With no pave anywhere, the metal frames three stones and nothing else. Yellow and rose gold define each one separately, which suits a design built on contrast between round and rectangular. White gold blends them into a single run of light. For daily wear 14K is harder than 18K and holds three separate claw settings more securely.
Every ring is made to your finger size, so choose your size at checkout. If you are unsure, measure the inside diameter of a ring you already wear or ask us for a free size guide before ordering.
We can change the sides to pear, trapezoid or tapered baguette, make them smaller or larger, add pave to the shoulders, or set a hidden halo beneath the cushion. For any other customization request please contact us at https://mapplegems.com/pages/contact and we will quote it before you order.
Why round side stones rather than angular ones?
Round sides contrast with the rectangular centre instead of extending it, so the three stones read as three separate diamonds. Angular sides such as trapezoids do the opposite, merging into one wide block. Which is better depends entirely on whether you want contrast or continuity.
What does a three stone ring mean?
The three stones are usually read as past, present and future, one for where a couple began, one for where they are, one for what is ahead. It is why trilogy rings suit both engagements and milestone anniversaries.
What is an elongated cushion?
A cushion cut stretched into a rectangle while keeping its softly rounded corners. It runs along the finger and slims the hand the way an oval does, while retaining the antique character of a cushion.
Does the carat weight include the side stones?
No. The carat option you choose is the weight of the cushion centre only. The two round side stones are additional and scale in proportion at every carat weight.
Is a lab grown diamond a real diamond?
Yes. Same carbon structure, hardness and brilliance as a mined diamond. Only the origin differs.
Do I get a certificate?
Yes. A free IGI certificate for the centre stone comes with every order, listing colour, clarity, cut grade and carat weight.
How long does it take to make?
Production usually takes ten to fourteen working days, plus shipping time to your address.
A lab grown diamond gives the same hardness, brilliance and fire as a mined stone at a fraction of the price, which is what makes a certified trilogy with a 4 or 5 carat cushion centre and two substantial round sides achievable. It is created without mining, so there is no excavation and no doubt about origin. Every centre stone we set is independently certified.
Mapple Gems is a made to order fine jewellery workshop in Surat, India, one of the world's main diamond cutting centres. We set lab grown diamonds and moissanite in solid gold and sterling silver, making each piece only after it is ordered, which keeps prices low without holding stock. Questions before you buy are welcome 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.
The Mapple Gems Promise
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