We test all recommended products and services independently and exhaustively. If you buy through our links, we might receive compensation. Our recommendations are not influenced by monetary considerations. Learn more.
- What you should know about buying a lab-grown diamond
- How We Researched Lab-Grown Diamond Prices
- March 2026 1.5-Carat Lab-Grown Diamond Prices
- Fancy-Shaped Lab Diamond Prices
- Why Choose Lab-Grown Diamonds?
- Prices for Sustainable Lab Diamonds
- Two 1.5-Carat Lab Diamond Ring Examples
- Where to Buy Lab-Grown Diamonds and Jewelry
- Compare Prices of Other Lab-Grown Diamond-Carat Weights
SALES ALERT! See the best diamond deals (terms apply):
Diamond prices vary greatly depending on the stone’s quality and where you purchase it. For instance, a 1.5-carat lab-grown diamond can range in price from as low as $600 to as high as $3000, depending on the lab diamond’s 4Cs (carat weight, cut, color, and clarity). On average, in March 2026, a premium 1.5-carat brilliant-cut round diamond, one of the most popular carats and cuts, costs around $1150.
In March 2026, an excellent quality 1.5-carat lab-grown diamond costs around $1100-1300, which is up to 87% less than a mined stone! Prices can range from $600 to $2500, depending on the quality.
To help you see where you can find the best and cheapest lab-grown diamonds, we have compiled prices from six of the most affordable jewelers. Our lab diamond price comparison includes both round brilliant and fancy-shaped diamonds.
But purchasing a diamond is a significant investment, and knowing where to find the best value for your money is crucial. We have created several lab diamond guides to assist our readers in making informed decisions.
We recommend starting with our popular articles below:
- Guide to buying a lab diamond – top tips for saving
- Ten tips to save money on a lab diamond engagement ring
- What you need to know before buying a lab-grown diamond
3 of the cheapest places to buy a 1.5-carat lab-grown diamond
What you should know about buying a lab-grown diamond
Before diving into the cost of lab-grown diamonds, it’s essential to understand their 4Cs: the diamond cut, clarity, color, and carat weight. We have created an easy-to-read guide called “Intro to Lab-Grown Diamonds: The Diamond 4Cs” that we recommend reading first. However, you can skip ahead if you’re short on time or just interested in the diamond prices.
- Diamond cut
- Diamond clarity
- Diamond color
- Diamond carat
In summary, the diamond 4Cs are crucial in determining a diamond’s quality. Diamond cut is especially important as it affects the diamond’s sparkle, also known as brilliance or fire. Always aim for the best possible diamond cut grade, even sacrificing size. Remember, size comes second to brilliance. No one wants a large but dull diamond.
In addition to cut, consider color, clarity, and carat weight when assessing a diamond’s quality. Opt for the best cut first, followed by color and clarity grades, with carat weight being the last consideration.
One money-saving tip is to choose a diamond just below popular (“round”) weights. For example, selecting a 1.43-carat diamond instead of a 1.5-carat diamond can sometimes save you money, and the difference is usually not noticeable to the naked eye.
How We Researched Lab-Grown Diamond Prices
To provide you with an estimate of the price of a 1.5-carat lab-grown diamond, we have gathered prices from the most reputable and best online jewelers in 2024.
To compare prices, we use a reference diamond. The diamonds we include in our price comparison are diamonds with quality grades (the diamond 4Cs) below. These are some of the most popular and typical grades for a 1.5-carat stone. First, we look for round-brilliant lab diamonds, and later, we’ll compare fancy-shaped diamond prices.
- Carat weight: 1.5 (plus-minus a little)
- Cut grade: Excellent or Ideal (whichever is the best, depending on the laboratory)
- Color grade: I-J
- Clarity grade: VS1-VS2
- Shape: Round Brilliant
- Origin: Lab-grown
Our reference diamond is not necessarily the best for you, but it indicates how to prioritize between the lab diamond 4Cs. You may want to consider a slightly better color grade, especially if not set in gold, but very often, at least an I color grade will suffice, as long as the diamond is not clearly yellow-tinted.
March 2026 1.5-Carat Lab-Grown Diamond Prices
Here are the prices for a 1.5-carat lab-grown diamond from our recommended jewelers. These retailers have an extensive inventory of high-quality diamonds, provide exceptional shopping experiences, and offer excellent customer service. Moreover, they offer the best prices for lab-grown diamonds, making them the perfect place for your diamond purchase.
| Lab diamond jeweler | 1.5-carat lab diamond prices |
|---|---|
| Ritani | $588-1465 |
| Grown Brilliance | $850-1105 |
| Clean Origin | $847-1421 |
| With Clarity | $1000-2028 |
| James Allen | $1650-2040 |
| Brilliant Earth | $1510- 2350* |
Prices are accurate when writing in 2026.
*Includes 100% sustainable diamonds.
Fancy-Shaped Lab Diamond Prices
Lab-grown diamonds offer various shapes and sizes beyond the popular brilliant-cut round diamond. These other shapes are commonly referred to as fancy shapes or fancy cuts. Our comprehensive guide to lab-grown diamond shapes highlights each shape’s unique beauty, advantages, and disadvantages.
It’s important to note that some fancy-shaped diamonds, such as heart-shaped diamonds, may be more expensive than round brilliants. In contrast, others, such as emerald-cut diamonds, can be more affordable.
How We Compared Fancy-Shaped Lab Diamond Prices
To help you compare prices, we have gathered the average costs of fancy-shaped lab-grown diamonds from the same top-rated diamond jewelers.
However, it’s worth mentioning that fancy-shaped diamonds are graded slightly differently, and cut grading is not as strict as with round brilliants. Therefore, we have adjusted the price ranges below, considering factors such as cut grade, which may include very good, a grade we would not accept for round brilliant cuts.
- Carat weight: 1.5 (plus-minus a little)
- Cut grade: Very Good, Excellent, or Ideal
- Color grade: I-J
- Clarity grade: VS1-VS2
- Shape: Fancy-shapes
- Origin: Lab-grown
March 2026 Fancy-Shaped 1.5-Carat Lab-Grown Diamond Prices
All prices below are from prices and go higher, but they indicate the price range. All of the diamonds referenced have the minimum specifications mentioned above.
| Lab diamond jeweler | Oval | Emerald | Pear | Princess | Radiant | Cushion | Heart |
|---|---|---|---|---|---|---|---|
| Ritani | $584 | $474 | $545 | $600 | $456 | $507 | $617 |
| Grown Brilliance** | $995 | $690 | $1015 | $685 | $675 | $995 | $2000 |
| Clean Origin* | $884 | $674 | $660 | $851 | $694 | $855 | $1110 |
| With Clarity | $905 | $925 | — | $1083 | $992 | $990 | — |
| Brilliant Earth** | $1560 | $1470 | $1540 | $1630 | $1540 | $1620 | $1850 |
| James Allen** | $1650 | $1670 | $1940 | $2260 | $1660 | $1700 | $2650 |
Prices are accurate when writing in 2026.
*Cut grade fancy
**Higher than minimum grades
Why Choose Lab-Grown Diamonds?
Lab-grown diamonds offer a significant cost advantage, with prices up to 60-80% lower compared to mined diamonds of the same 4C grades. And during lab diamond sales, you may be able to save even more. We constantly monitor and stay updated on promotions and sales offered by diamond retailers. So, sign up below to receive alerts on new deals and special offers for lab-grown diamonds so you can make the most of your diamond purchasing decision.
In addition to their lower prices, lab-grown diamonds boast environmental and social benefits compared to mined diamonds. To delve deeper into these advantages, we recommend checking out the following article:
Prices for Sustainable Lab Diamonds
Lab-grown diamonds are an excellent choice for ethical and sustainable diamond options. Opt for lab-grown diamonds made with renewable energy, set in recycled metal, and packaged in sustainable materials to maximize sustainability. Remember that 100% sustainable lab diamonds typically cost 30-40% more than other lab-grown diamonds.
If you’re looking for a reliable place to purchase sustainable and zero-emission lab-grown diamonds, Brilliant Earth is a top contender (read our review of Brilliant Earth). Another option worth considering is Vrai, although after comparing Brilliant Earth vs. Vrai, we find Brilliant Earth offers a superior selection of sustainable diamonds (see our review of Vrai). Pandora is also making efforts towards sustainability, as highlighted in our Pandora Brilliance review. However, they may not be on par with Vrai or Brilliant Earth regarding environmental commitment (or quality).
Two 1.5-Carat Lab Diamond Ring Examples
When seeking a jewelry set featuring a 1.5-carat lab-grown diamond, there are many styles to choose from. Take a look at these stunning examples of rings that showcase the beauty of 1.5-carat stones. From timeless classics to contemporary engagement ring settings, a diamond of this size complements various jewelry pieces, including engagement rings, anniversary rings, and lab diamond earrings.
Where to Buy Lab-Grown Diamonds and Jewelry
At LabGrownCarats.com, we review lab-grown diamond sellers and jewelers to help you find the best places to buy lab diamonds and jewelry. We also compare the best lab diamond jewelers in our lab diamond jeweler comparisons.
3 of our favorite places to buy lab-grown diamonds
Compare Prices of Other Lab-Grown Diamond-Carat Weights
We compile and list prices for the most popular lab-grown diamond carat weights. Compare the prices for 1.5-carat lab-grown diamonds with the below-carat weights.
- Prices for a ½-carat lab diamond
- Prices for a 3/4-carat lab diamond
- Prices for a 1-carat lab diamond
- Prices for a 2-carat lab diamond
- Prices for a 3-carat lab diamond
- Prices for a 4-carat lab diamond
- Prices for a 5-carat lab diamond
- Prices for a 6-carat lab diamond
- Prices for a lab diamond engagement ring
- Prices for lab diamond earrings
- Prices for synthetic diamonds
