How Much Does a Lab Grown Diamond Engagement Ring Cost?
Most pricing guides quote ranges pulled from nowhere in particular. These figures come from our own catalog of solid gold engagement rings, so they reflect what these rings actually sell for.
All prices are for the ring complete: centre stone and solid gold setting, with 18K as the base. Choosing 14K lowers the price by roughly 12%, and 10K by roughly 22%.
Lab grown diamond engagement ring prices by carat
1 carat: $1,025 to $1,800, typically around $1,450
1.5 carat: around $1,380
2 carat: $1,700 to $6,880, typically around $2,500
3 carat: $2,000 to $4,080, typically around $2,775
4 carat and above: $3,025 to $6,995, typically around $5,000
The wide spread at 2 carats is worth understanding: setting complexity matters as much as the stone. A plain solitaire and a hidden halo with pavé shoulders can hold the same centre stone and differ by thousands.
Moissanite engagement ring prices by carat
1 carat: $960 to $1,355, typically around $1,260
1.5 carat: $910 to $1,400, typically around $1,295
2 carat: $965 to $1,720, typically around $1,500
3 carat: $1,080 to $1,920, typically around $1,600
4 carat and above: $1,240 to $2,700, typically around $1,900
Where the gap actually opens
At 1 carat the two stones are close: roughly $1,450 for a lab diamond against $1,260 for moissanite. Under those conditions the choice is about preference, not budget.
At 3 carats the picture changes completely. A lab diamond runs around $2,775 against roughly $1,600 for moissanite, and by 4 carats it is about $5,000 against $1,900.
The rule that follows: if you want a smaller stone, pick whichever you prefer. If you want a large stone on a fixed budget, moissanite buys roughly twice the size.
For the full comparison on sparkle, hardness and resale, read lab grown diamonds vs moissanite.
Why mined diamonds are absent from these numbers
A comparable 2 carat mined diamond ring generally starts around $12,000 against roughly $2,500 for the lab grown equivalent. Lab grown production has scaled enormously in recent years and prices have fallen with it. The stones are chemically and optically identical.
Three things that change your price
Karat. The same ring in 10K costs about 22% less than in 18K. See 10K vs 14K vs 18K.
Setting. Solitaires are cheapest. Halos, hidden halos, pavé bands and three-stone designs add both metal and labor.
Shape. Rounds command a premium because more rough is lost in cutting. Ovals, pears and emerald cuts often look larger per carat for less.
Frequently asked questions
Is a lab grown diamond a real diamond?
Yes. It is chemically and optically identical to a mined diamond and graded on the same scale by the same labs.
How much should I spend on an engagement ring?
The old two- or three-months-salary rule was a marketing invention. Spend what fits your finances. With lab grown and moissanite, a striking ring at $1,500 is entirely achievable.
Do lab grown diamonds hold value?
Not well, and neither does moissanite. The lasting value in your ring is the solid gold. Buy the ring you want to wear, not as an investment.
Will prices keep falling?
Lab grown diamond prices have fallen steadily as production scaled. Gold prices move independently and have been rising, so the metal portion of your ring may not get cheaper.
Browse lab grown diamond engagement rings and moissanite engagement rings, all in solid gold.
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