As of August 2026, a complete 3 carat lab-grown diamond engagement ring at Beylora costs $2,500 to $3,900 in 14k gold, depending on the design, with the center stone at D color and VVS2 clarity or better and the setting included. For comparison, a loose 3 carat round lab-grown diamond alone at that grade runs about $4,560 at a major online retailer. Here is how the price moves with carat, and what to check before you pay.
What does each carat size cost, complete?
Every Beylora design is offered from 2 to 5 carats. These are complete-ring prices in 14k gold across all 75 designs, August 2026:
| Center stone | Lowest | Typical | Highest |
|---|---|---|---|
| 2 carat | $1,800 | $2,500 | $3,200 |
| 2.5 carat | $2,150 | $2,850 | $3,550 |
| 3 carat | $2,500 | $3,200 | $3,900 |
| 4 carat | $3,200 | $3,900 | $4,600 |
| 5 carat | $3,900 | $4,600 | $5,300 |
18k gold and platinum add a stated amount shown on each ring page. Nothing else is added except sales tax and, only if you choose it, $300 Rush delivery.
Why a 3 carat ring can cost less than a 3 carat stone
A brand buys its stones at wholesale. A loose 3 carat D/VVS2 round bought at retail runs about $4,560 before any setting, while a complete Beylora 3 carat ring starts at $2,500. That is the difference between buying parts at retail and buying the finished ring from the maker, and it is why the honest comparison is always ring to ring, never stone to setting.
Does a 3 carat lab-grown diamond look big?
Yes. A 3 carat round is about 9.3 mm across, against about 8.1 mm for a 2 carat. Elongated shapes such as oval, marquise, and pear cover more of the finger for the same weight, so a 3 carat oval reads larger than a 3 carat round.
What to get in writing
The IGI report number of the exact stone, the color, clarity, polish and symmetry grades, and one total for the finished ring at that carat and metal. Why the total matters more than the parts, or see every design at 3 carats.