Ondine Cluster Half-Eternity, Lagoon

€887

14K gold

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ShadeLagoon

Sky blue colour diamonds above, soft blue below. Calm and clear, like water at noon.

Metal

Designer Band

Ondine Cluster Half-Eternity, Lagoon

Ref. HLR-21-LG

Marquise
· 0.67-0.81 ct total

Ondine Cluster Half-Eternity, Lagoon: a made-to-order stacking ring with lab-grown colour diamonds and white marquise diamonds, in 14K or 18K gold. Twelve slim white marquise diamonds and thirteen round lab-grown colour diamonds (1.5 mm) sit in a soft scattered pattern across the front of the band. Lagoon: sky blue colour diamonds on the upper row, soft blue below. Made to stack next to her engagement ring, or to wear on its own. As with most coloured lab-grown diamonds, the colour is set after growth and stays stable in everyday wear. Lab-grown diamonds only. Made to order in 14kt or 18kt yellow, white or rose gold, in up to 21 business days.

Technical specs
Diamonds
26 Marquise
Total diamond weight
0.67-0.81 ct
18-karat gold
2.31-2.55 g
14-karat gold
1.97-2.17 g
Manufacturer
Kove Jewelry s.r.o., Reg. No. 27484611

Made to order by Kove, to our own drawings. Carat and gold weights may vary within the range shown; your finished piece is individually crafted and the final specifications are confirmed for your finished piece.

  • Kove certificate for your piece

    Your finished piece comes with a printed Kove certificate and is personally checked by our founder before shipping.

  • Made by Kove, to our own drawings

    We design every piece, make it to order, then polish, engrave and inspect it ourselves.

  • Free changes before production · Lifetime servicing

    We stand behind every piece we deliver. Cleaning, re-polishing and prong-tightening stay free for the life of the piece.

  • Reviews from our customers

    Read what our customers say about their jewelry and their experience with Kove.

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.

Included stones

0.74 ct of lab-grown diamonds: 12 white marquise (3×1.5 mm) and 13 round colour diamonds (1.5 mm), collet-set across the band.

Diamond type

This model ships with a lab-grown diamond (natural stones at this size are out of stock). Prefer a natural diamond? Write to us and we will check availability and quote it.

Your current spec

14K yellow gold · Marquise · Size 54

Ring size (EU)

Between two sizes? Choose the larger: a ring that is a little loose still slips over the knuckle; one that is too tight does not.

Engraving (optional)

0/40

Total price

€887

or 3 interest-free payments of €295.67Klarna.

Your finished piece comes with a printed Kove certificate and a personal check by our founder before it ships. Details of any independent diamond report are shown with the selected stone.

Registered with the Czech Assay Office (Puncovní úřad) · No. 15 432

Like the design but want a different stone, a colour, or a tweak? Ask us, we’ll tailor it and quote.

Need help choosing? Get a personal recommendation

Choosing a piece for yourself or as a gift?

Tell us the style you like, your budget and when you need the piece. We will help you choose the design, metal and diamonds, and confirm the production time before you order.

  • Kove certificate for the finished piece
  • Made to order in up to 21 business days, often sooner
  • 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 · lifetime cleaning.

Made a mistake in your order? Write to us right away: while it has not gone into production, we change it free of charge. Cancel before shipping: we keep 20% of the price and refund the rest, or you take the full amount as Kove store credit.

Shipping · Returns & warranty

Learn more: the 4Cs · lab vs natural · 14k vs 18k · ring size

Ondine Cluster Half-Eternity, Lagoon

14k gold·Lab-grown·Centre incl.
€887

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, as long as the order has not gone into production. Made a mistake in your order? Write to us right away via the WhatsApp number on the order confirmation or info@kove.jewelry: while the order has not gone into production, Kove changes the metal (14K white / yellow / rose; 18K white / yellow / rose) or the center-stone size or shape free of charge. Once paid, a made-to-order piece goes into production. If you cancel before it ships, Kove keeps 20% of the price and refunds the rest, or you take the full amount paid as Kove store credit, your choice.

How long does production take?

Every Kove design is made to order in up to 21 business days, often sooner. The same limit applies to every setting, pavé, halo and hidden-halo included. After dispatch, insured courier delivery within the EU takes 3-7 business days; for Switzerland, customs clearance is added and its length is not known in advance. Ask us before ordering.

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 every country we sell to: the entire European Union (Czech Republic, Slovakia, Germany, Austria, Poland, France, Italy, Spain, the Netherlands, Belgium and all other EU member states), plus the United Kingdom, Switzerland, Norway, the United States, Canada, Australia and the United Arab Emirates. Outside the EU the courier may collect import duties and taxes on delivery, except in Switzerland, where Kove pays them. Every parcel is fully insured at the declared value and ships with signature confirmation.

Reviews

What people are saying

We only publish reviews from customers who actually bought from us. Reviews marked “Verified purchase” are matched to a specific order; the others were verified with the customer in person.

Verified purchase

“Great service”

Great service, special requests are carried out wonderfully. No long delivery times. And the ring looks great. I can definitely recommend it.

See this review on Trustpilot ↗ · Translated from German

Sarah S.

DE

Verified purchase

Perfect! Thanks

Sent to us on WhatsApp, published with permission

Photo from Rui G.
Customer's own photo

Rui G.

PT

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