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VossAgin 3.00 CTW AGI Certified Round Lab Grown Diamond Six Prong Solitaire

VossAgin

3.00 CTW AGI Certified Round Lab Grown Diamond Six Prong Solitaire

For a proposal with a large round center stone

A clear choice for a proposal when your partner wants a large, classic round stone: a 3-carat lab-grown diamond in a six-prong solitaire on 14K white gold, AGI certified. Skip it if a mined diamond matters to your partner or they wear yellow gold.

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VossAgin offer

$3,611 off

Enter at VossAgin checkout. Valid through March 31, 2027.

$4,999Price as of Nov 7, 1:12 PM ET Details

Gift notes by Shnoop Editors · Updated October 18, 2026

Why it works as a gift

An engagement ring is the one piece of jewelry where the safest design is usually the right one. A round stone held by six prongs on a plain band is the shape most people picture when they imagine a proposal, and it will not date the way a trend setting can. It also leaves room for a wedding band to sit beside it later without a fight over style.

VossAgin lists this ring as a 3.00-carat total weight round lab-grown diamond, F color, excellent cut, AGI certified, in 14K white gold with a six-prong solitaire setting. The title gives the clarity as VS and the specifications as VS1 or better. Those are the details a careful buyer wants written down before spending at this level, and an AGI grading report gives the couple a document to keep with the ring and to use for insurance. The FTC's guidance says sellers of laboratory-grown diamonds must tell buyers they are not mined, with the qualifier immediately before the word diamond, which VossAgin's title does.

The real decision is lab-grown or mined. Choosing lab-grown lets a proposal budget go to size and grade, so a three-carat F-color stone becomes reachable. For some couples that is exactly the point; for others a mined stone carries a meaning that no grading report replaces. Settle that question with your partner, or with someone who knows them well, before you choose the ring. Also note that VossAgin is a client of Shnoop's publisher, who is paid a share of its sales.

Who it’s for

  • Someone planning a proposal whose partner has said they want a big, simple round solitaire rather than a halo or a vintage setting
  • A partner who wears white gold or silver-toned jewelry every day and would want the ring to match
  • A couple who have already talked about lab-grown diamonds and decided they would rather put the budget toward carat weight and color

Skip it if

  • Your partner has said they want a mined diamond, or values natural stones for their rarity
  • They wear yellow or rose gold; this listing is for 14K white gold
  • They prefer a delicate or low-profile ring; a three-carat center stone is large and will be noticed
  • Their ring size is outside 5 to 8.5, the sizes VossAgin lists, or you can't find it out quietly; the page doesn't say whether resizing is offered

Giving it

  • Find the ring size first: borrow a ring your partner wears on that finger and have a jeweler measure it, or ask a close friend
  • Before you order, ask VossAgin to confirm the delivery date, whether resizing is possible and the terms of its advertised 30-day money-back guarantee, so the ring arrives well ahead of the proposal
  • Ask whether the AGI grading report ships with the ring, and keep it somewhere safe and separate; it records the stone's grading and is what an insurer will ask for
  • If you are traveling to propose, the Leatherology small travel jewelry case gives the ring a padded place in a carry-on

The facts

Stone
Round lab-grown diamond, 3.00 carats total weight
Grade
Color F; clarity VS in the title, VS1 or better in the specifications; cut excellent
Certification
AGI certified
Metal
14K white gold
Setting
Six-prong solitaire
Sizes listed
5 to 8.5 in half sizes; resizing not stated
Returns
VossAgin advertises a 30-day money-back guarantee and free US shipping and returns
Lab-grown disclosure
The FTC says lab-grown diamonds must be disclosed as not mined, with a qualifier such as laboratory-grown immediately before the word diamond

Shnoop hasn’t tested this product. These notes come from the maker’s and retailer’s published information, read against our gift criteria. How we pick. Sources: VossAgin: 3.00 CTW AGI Certified Round Lab Grown Diamond Six Prong Solitaire Engagement Ring, F-VS Clarity in 14K White Gold, VossAgin: Engagement rings collection, FTC: In the Loupe, Advertising Diamonds, Gemstones and Pearls.

A note from the editors

Not quite right? Here’s what we’d look at next.

The best gift fits the person and the moment, not just the category. If this one misses on price or feel, these are close cousins we’d suggest for her.

Spend less — $500–1,000

Same kind of recipient, a gentler price.

A different idea, same budget ($1,000+)

If this isn’t their kind of thing.

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