Shape
Gold
Hidden Halo
Lumière Sonnet Hidden Halo Oval
Ref. DDLR-172-OV
Lumière Sonnet Hidden Halo Oval — made-to-order IGI-certified lab-grown or GIA-certified natural oval-cut engagement ring with 58 accent diamonds in 14K or 18K gold. The Lumière Sonnet Hidden Halo Oval is set with the lab-grown or natural oval-cut diamond you choose, from 1 carat upward — a shape prized for its elongating elegance and exceptional light return. Choose lab-grown or natural: both are real diamonds, both IGI or GIA certified, each with a certificate you can verify online. A concealed halo of 58 pavé-set accent diamonds lifts the centre stone with quiet radiance, without competing for attention. Crafted in your choice of 14-karat or 18-karat gold, this ring moves effortlessly from engagement proposal to anniversary milestone.
Technical specs
- Centre stone (your choice)
- Oval · ≈ 12.00 × 8.50 mm
- Side stones
- 58
- Total diamond weight
- 3.75–4.59 ct
- 18-karat gold
- 3.42–3.78 g
- 14-karat gold
- 2.91–3.21 g
Carat and gold weight are approximate. Your selected centre diamond is sourced from our certified network and its exact carat appears on the IGI or GIA certificate; gold weight is within standard casting tolerance.
IGI / GIA certified
Every center diamond ships with its lab report. Side stones meet the same grading standard.
Crafted by our trusted partner ateliers
A curated network of partner ateliers — each piece routed to the one best suited to the design.
Free first resize · 48h spec-change window · Lifetime servicing
We stand behind every piece we deliver. Cleaning, re-polishing and prong-tightening stay free for the life of the piece.
Our review platform launches with our first customer
No paid testimonials, no recycled stock reviews — be first to share your story.
Why lab-grown
A lab-grown diamond is a real diamond — the same carbon, the same fire, the same 10/10 hardness, graded by the same independent labs. The only difference is where it grew. A real diamond — and you can prove it, to anyone, anytime.
Choose your diamond
Each stone is GIA / IGI certified and reserved for your ring once picked. The design size is approximate — the setting is adapted to the exact diamond you choose.
Diamond type
Choose a specific diamond — optional
Your current spec
14K yellow gold · Oval · ≈ 12.00 × 8.50 mm · Size 51
Ring size (EU)
Buying as a surprise? Find her size discreetly → — and don’t worry, every ring is made to order, so resizing is free.
Engraving (optional)
0/40
From · with a hand-selected lab diamond
€1,878
Every diamond comes with its own independent IGI or GIA certificate you can verify yourself online, a laser inscription on the stone, a printed Kove certificate for the finished piece, and a personal check by our founder before it ships.
Pick a centre diamond above to enable checkout.
or check out directly
Like the design but want a different stone, a colour, or a tweak? Ask us — we’ll tailor it and quote.
First time choosing a ring?
Most people buy an engagement ring once, and it's the most personal thing they'll ever order. Tell us her style, or send a photo of a ring she loves, and we'll guide you on shape, size and stone — in plain language, no pressure.
- IGI/GIA-certified diamonds
- Made to order in the EU · 10–28 business days
- Ships from the EU — no customs within the EU, insured and tracked
- Secure payment
Shipping, returns & warranty⌄
Free insured shipping across the EU.
Made for you, backed by us.
24-month warranty on craftsmanship · free first resize · lifetime cleaning.
Want to change the metal or stone before production starts? Email us within 48h of ordering.
Learn more: the 4Cs · lab vs natural · 14k vs 18k · ring size
Frequently asked questions
Is a lab-grown diamond a real diamond?
Yes — a lab-grown diamond is chemically, optically and physically identical to a mined diamond. The only difference is origin: it is grown in a high-pressure / high-temperature or chemical-vapour-deposition reactor over 4–8 weeks instead of mined from the earth. Kove only ships IGI-certified lab-grown diamonds.
How does an IGI certificate differ from a GIA certificate?
Both IGI (International Gemological Institute, Antwerp) and GIA (Gemological Institute of America, Carlsbad) are independent gem labs that grade the 4Cs to identical international standards. IGI is the recognized authority for lab-grown diamonds; GIA is the recognized authority for natural diamonds. Kove ships IGI for every lab-grown stone and GIA (or HRD) for every natural stone over 0.50 ct.
What's the difference between a marquise and an oval cut?
A marquise (or navette) is an elongated football-shape brilliant with two sharp pointed ends — it shows the largest visible surface per carat of any cut and elongates the finger. An oval is a rounded elongated brilliant without pointed ends — it offers similar finger-lengthening with a softer profile and zero risk of point chipping. Both work beautifully for solitaire and halo settings at Kove.
Can I change the metal or stone shape after ordering?
Yes — Kove offers a 48-hour spec-change window after every order. Within that window the metal (14K white / yellow / rose; 18K white / yellow / rose) and center-stone size or shape can be swapped at no charge before manufacturing begins. Reach out via the WhatsApp number on the order confirmation. After 48 hours the configuration is locked because the diamond has been reserved and casting has begun.
How long does production take?
Typical production time at Kove depends on the configuration: 10–28 business days for solitaire and three-stone settings, 28–35 business days for pavé, halo and hidden-halo settings with intricate side-stone work. After production we ship insured via courier within 2–7 business days across the EU.
Is the price the same for lab-grown and natural diamonds?
No — the setting price (gold + side stones + labor) is identical, but the center diamond is priced separately and lab-grown diamonds cost roughly 50–70% less than natural diamonds of the same 4C grade. A 2-carat IGI VS1/F lab-grown center retails around €1,200–€1,600 at Kove, while a comparable GIA-graded natural sits at €5,500–€9,000. Both options are offered on every ring with transparent live pricing.
Do lab-grown diamonds hold their resale value?
Honestly, no diamond is a good investment — not lab-grown and not mined. Any diamond resells for only a fraction of its retail price (a natural diamond typically around 30–50%), and lab-grown resale is lower and has been trending down as the technology scales. But an engagement ring is an emotional object meant to be worn for a lifetime, not a financial asset to be resold. What never changes is what the independent IGI or GIA certificate guarantees: your stone is a real diamond of the exact grade stated. Choose it for the ring you'll love and wear — not for a resale market.
How do I verify my diamond certificate online myself?
Your centre diamond comes with its own independent IGI or GIA report — a unique number that is also laser-inscribed on the stone's girdle — so you can confirm it yourself, free: enter the number at igi.org (Report Check) for lab-grown stones or gia.edu (Report Check) for natural stones and compare it on screen with your paper report. On top of that, every finished piece ships with a printed Kove certificate showing the model, its net gold weight and a QR code that opens your stone's official lab report. You never have to take our word for it.
Do you ship internationally?
Yes — Kove ships free insured courier delivery to the entire European Union (Czech Republic, Slovakia, Germany, Austria, Poland, France, Italy, Spain, the Netherlands, Belgium and all other EU member states). Delivery outside the EU is available on request and quoted individually. Every parcel is fully insured at the declared value and ships with signature confirmation.
How much is the Lumière Sonnet hidden-halo oval engagement ring in 14K white gold under €2500?
At Kove, the complete Lumière Sonnet Hidden Halo Oval (DDLR-172-OV) in 14K white gold starts at €2,091 today — under €2,500, with live pricing for a 1 ct IGI-certified VS1/F lab-grown oval centre and every other option on the product page. Hidden-halo means the accent diamonds are visible only when the ring is viewed from the side, keeping the top profile clean and contemporary.
Oval hidden-halo lab-grown vs natural at 1.5 ct — what is the price difference?
At 1.5 ct VS1/F oval, a Kove IGI-certified lab-grown centre runs roughly €850–€1,150; a comparable GIA-certified natural oval runs €3,800–€5,500 — a 70–80% gap for stones that grade to the same 4Cs. With the Lumière Sonnet Hidden Halo Oval setting (DDLR-172-OV) in 14K, the complete lab-grown ring lands at roughly €2,091–€2,400 today; the natural version prices live on the product page.
How long does Kove take to produce a hidden-halo oval ring and ship across the EU?
The Lumière Sonnet Hidden Halo Oval has accent diamonds hand-set under the centre stone, so production takes 28–35 business days at Kove (longer than a plain solitaire because each halo accent is individually set). After production, insured courier delivery across the EU adds 2–7 business days — plan roughly 6–8 weeks end to end. Express production is not offered on halo settings; for a tighter date, a plain oval solitaire ships in 10–28 business days.
