Forever For Love
Marquise lab diamond three-stone in solid gold & platinum
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GIA / IGI certification applies only to natural and lab diamonds over 0.7cts.
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Custom design
Any metal. Any gemstone. Any words inside the band. Tell us what you have in mind - we'll make it real.
Ready to order the 3 Ct Marquise Lab Diamond Three Stone Engagement Ring? Review the selected configuration below before adding it to cart; it updates as you choose the metal, gemstone and centre stone size above.
Each piece is handcrafted to order by Forever For Love in the metal, stone and carat size you choose.
Available to customise
Your selected options update above with the product price. These are the standard choices available for this design.
Pick the centre stone type for your preference.
Pick the centre stone type for your preference.
Compare available centre stones
Every centre-stone option you can choose for this design, side by side. Your selected stone is the one chosen above in the buy zone.
| Centre Stone | Stone type | Mohs Hardness | Refractive Index | Price Tier | Certification | Best Suited For |
|---|---|---|---|---|---|---|
| Lab Diamond | Lab-grown diamond | 10.0 / 10 | 2.42 | Premium | IGI Certified Grading Report | Real diamond optical and physical properties with independent grading. |
About this design
You can buy this marquise three-stone engagement ring directly from Forever For Love. Each ring is handcrafted to order in your selected metal and centre stone size, with free insured worldwide shipping.
Yes — the Lab Diamond option is IGI-certified. Natural Diamond side stones also come with GIA or IGI certification where available.
Three-stone rings typically represent past, present, and future. The design is elegant and adds extra sparkle with the side stones flanking the centre diamond.
Each ring is made to order and typically arrives within 8–10 days of purchase. Every order ships with free insured worldwide delivery and 14-day returns.
Yes — it is covered by our limited lifetime warranty, which includes free professional cleaning and prong tightening for life, plus one free resize within the first year.
Rings are made in US & Canada sizes — a conversion chart and tips for finding the size you wear are provided on this page.
Quick glance
Looking for one of the shapes below, or something different? We can customise it for you.
Certified standards
Every diamond selected for our custom rings meets strict expert specifications. Here is how we grade each characteristic.
The cut determines a diamond's brilliance, fire, and scintillation. It is the most critical factor of the 4Cs.
We craft our rings exclusively with Excellent to Ideal Cut stones. This ensures maximum light refraction, giving the center diamond its characteristic intense sparkle that reflects from across a room.
Color refers to the presence or absence of trace tint within the diamond, graded from D (colorless) to Z (light yellow).
Our lab-grown diamonds are graded in the elite D, E, and F colorless range. To the naked eye, these stones are completely ice-white, ensuring that your ring reflects pure light without any distracting warm or yellow hues.
Clarity measures the purity of the diamond, observing microscopic inclusions inside the stone or blemishes on the surface.
We offer VS1 to VS2 (Very Slightly Included) diamonds. These stones are guaranteed to be 100% "eye-clean" — meaning any minor microscopic inclusions are completely invisible to the naked eye under normal viewing conditions.
Carat measures the physical weight of the diamond. 1.0 carat is equivalent to 200 milligrams.
We configuration-scale our rings to maintain perfect design proportions across all carat sizes (from 1.0 ct up to 8.0 ct). As the center stone increases, the accent diamonds in the hidden halo are adjusted in scale to keep the ring looking balanced.
Independent Grading
Certification is included only when a natural or lab-grown diamond centre stone over 0.7 ct is selected. Report details are specific to the selected diamond.
* Certification is included only when a natural or lab-grown diamond centre stone over 0.7 ct is selected. Report details are specific to the selected diamond.
Sizing
All our rings come in US ring sizes. If you don't know your US ring size, please see our conversion chart and tips on finding which size you wear.
Fine craftsmanship without middlemen.
Every diamond certified by experts.
True Scale & Proportions
Protected for generations to come.
One-of-a-kind pieces for your vision.
Handcrafted with the finest materials.
Ethically sourced materials.
Safe and encrypted transactions.
Pay later with Klarna.
Insured worldwide delivery.
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