All Jewelry
Certified stones, cut and set to order.
Bespoke
Don't see your ring? Design it.
Choose the stone, cut, metal and setting — priced live, rendered in 3D as you build.
Lab-grown diamond and moissanite jewelry, made to order
VARNI is an online jewelry studio for lab-grown diamonds and moissanite. Engagement rings, stud earrings, pendants, tennis bracelets and wedding bands are all made to order — and because every product image on this page is a live 3D render of the exact configuration, what you see is precisely what we craft. One deterministic pricing engine sits behind the whole store, so the price on a card, in the customizer and in your bag always agree.
Buy lab-grown diamond rings online at VARNI
An engagement ring is easier to get right when you can turn it in your hands first. Open any ring to rotate it in 3D, then set the metal, shape, carat and setting — the price updates live with every change. Each center stone is IGI certified and laser-inscribed, and because lab-grown diamonds skip the mining supply chain, the same piece typically comes in 60–80% below its mined equivalent. We show that comparison on every product, plainly.
How a lab-grown diamond is grown
Our diamonds grow by chemical vapor deposition. A thin diamond seed goes into a vacuum chamber, carbon-rich gas is ignited into plasma, and carbon settles onto the seed atom by atom — layer after layer, over several weeks — until a rough diamond has formed. It is then cut, polished and graded to exactly the same standards as a mined stone. Watch the process step by step.
Shop every shape, metal and setting
Eight cuts — round, oval, cushion, princess, pear, marquise, emerald and radiant — in 18k yellow, rose and white gold or platinum, set as a solitaire, halo, pavé or trilogy. If you are not sure where to start, the Find My Sparkle quiz narrows it to three honest recommendations in about 90 seconds, and custom design can start from nothing more than a photo or a sketch.
Why buy from VARNI
Every piece is certified genuine and delivered fully insured. Ownership comes with a lifetime warranty, lifetime free maintenance, free resizing and 30-day returns — and a concierge that interprets plain requests like “big oval under $2k” into an honest shortlist.
Questions, answered
Yes. A lab-grown diamond is chemically, optically and physically identical to a mined one — pure crystallized carbon, the same 10/10 hardness, the same fire. The only difference is where it grew, which is why each of ours ships with an independent IGI grading report.
Moissanite is silicon carbide — a different gem, not an imitation. It bends light harder than diamond, throws about 2.4× the rainbow fire, sits at 9.25 on the hardness scale, and costs roughly 80% less per carat.
Every piece is made to order — allow 2 to 3 weeks for crafting, then 2–4 business days of free insured express shipping with a signature on delivery.
Yes. The first resize is free within 60 days of delivery, and at cost for life after that. Cleaning, polishing and inspection are complimentary forever.
Lab-grown diamonds ship with an IGI grading report, laser-inscribed on the girdle; moissanite is graded in-house to the same color and clarity standards. The printed report comes with the piece and a PDF copy is emailed on dispatch.
You have 30 days to return any piece for a full refund — insured return shipping is on us. If you are between two options, the concierge will give you an honest read.