“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
Ondine Cluster Half-Eternity, Lagoon
14K gold
ShadeLagoon
Sky blue colour diamonds above, soft blue below. Calm and clear, like water at noon.
Metal
Designer Band
Ref. HLR-21-LG
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.
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.
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
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.
Like the design but want a different stone, a colour, or a tweak? Ask us, we’ll tailor it and quote.
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.
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.
Learn more: the 4Cs · lab vs natural · 14k vs 18k · ring size
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.
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.
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.
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.
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.
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.
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.
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.
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
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.
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
Perfect! Thanks
Sent to us on WhatsApp, published with permission

Rui G.
PT