How Much Is a 1.5-Carat Lab Diamond? November 2023 Lab-Grown Diamond Prices

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Diamond prices can vary greatly depending on factors such as the quality of the stone 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 November 2023, a premium 1.5-carat brilliant-cut round lab-grown diamond, which is one of the most popular carats and cuts, costs around $1150 and can be up to 87% less expensive than a mined diamond.

How much does a 1.5-carat lab-grown diamond cost?

1.5-carat lab diamond prices range from $600 to $2500, depending on the quality. How Much Is a 1.5-Carat Lab Diamond? In November 2023, an excellent quality 1.5-carat lab-grown diamond costs around $1100-1300, which is up to 87% less than a mined diamond!

To help you understand the cost of a 1.5-carat lab diamond, we have compiled prices from six of the most affordable places to buy lab-grown diamonds, including both round brilliant and fancy-shaped diamonds. As purchasing a diamond is a significant investment, it’s crucial to know where to find the best value for your money. We have created several lab diamond guides to assist our readers in making informed decisions.

We recommend starting with our popular articles below:

3 of the cheapest places to buy a 1.5-carat lab-grown diamond

What you should know about buying a 1.5-carat lab diamond

Before diving into the cost of a 1.5-carat lab-grown diamond, it’s essential to understand the diamond’s 4Cs, which are 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, if you’re short on time or just interested in the price of a 1.5-carat lab diamond, you can skip ahead.

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 if it means 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.

To provide you with an estimate of the price of a 1.5-carat lab-grown diamond, we have gathered prices from reputable online diamond retailers in 2023. Our reference diamond for comparison is a round brilliant-cut lab-grown diamond with the following 4C grades:

Our reference diamond is not necessarily the best for you, but it gives a good indication of 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.

Prices for 1.5-carat lab diamonds

Here are the prices for a 1.5-carat lab-grown diamond from our recommended diamond retailers, which we believe are the top places to buy lab-grown diamond jewelry and engagement rings. 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 jewelerPrice for a 1.5-carat lab diamond
Grown Brilliance$850-1105
Clean Origin$847-1421
With Clarity$1000-2028
James Allen$1650-2040
Brilliant Earth$1510- 2350*
Prices for 1.5-carat lab diamonds collected during November 2023.

Prices for 1.5-carat lab diamonds are accurate at the time of writing in 2023.
*Includes 100% sustainable diamonds.

Prices for 1.5-carat fancy-shaped lab diamonds

Lab-grown diamonds offer a wide variety of shapes and sizes beyond the popular brilliant-cut round diamond. These other shapes are commonly referred to as fancy shapes or fancy cuts. In our comprehensive guide to lab-grown diamond shapes, we highlight the unique beauty, advantages, and disadvantages of each shape.

It’s important to note that some fancy-shaped diamonds may be more expensive than round brilliants, such as heart-shaped diamonds, while others may be more affordable, such as emerald-cut diamonds. To help you compare prices, we have gathered the average costs of 1.5-carat fancy-shaped lab-grown diamonds.

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, taking into consideration factors such as cut grade, which may include very good, a grade we would not accept for round brilliant cuts.

All the below prices are from prices and go higher, but it gives you an indication of the price range, and all of the diamonds referenced have the above-mentioned minimum specifications.

Prices for 1.5-carat lab diamonds are accurate at the time of writing in 2023.
*Cut grade fancy
**Higher than minimum grades

The prices for 1.5-carat lab diamonds are from our top-rated best places to buy lab diamonds, where you’ll find the best prices, quality, and shopping experience.

Why choose a 1.5-carat lab-grown diamond?

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 also boast environmental and social benefits compared to mined diamonds. To delve deeper into these advantages, we recommend checking out the following articles:

Prices for sustainable 1.5-carat lab diamonds

For those interested in ethical and sustainable diamond options, lab-grown diamonds are a great choice. To maximize sustainability, it’s recommended to opt for lab-grown diamonds made with renewable energy set in recycled metal, and packaged in sustainable materials. Keep in mind that 100% sustainable 1.5-carat 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 that 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, though they may not be on par with Vrai or Brilliant Earth in terms of environmental commitment (or quality).

Three 1.5-carat lab diamond ring examples

There is a wide array of styles to choose from when seeking a jewelry set featuring a 1.5-carat lab-grown diamond. Take a look at these stunning examples of rings that showcase the beauty of a 1.5-carat lab diamond. From timeless classics to contemporary engagement ring settings, a 1.5-carat lab diamond complements various jewelry pieces, including engagement rings, anniversary rings, and lab diamond earrings.

1.5-carat lab diamond from Clean Origin

Chaleur oval 1-5-carat lab diamond ring

1.5-carat lab diamond ring from Clean Origin

1.5-carat lab diamond from With Clarity

Cathedral solitaire 1.5-carat lab-grown diamond engagement ring

1.5-carat lab diamond from With Clarity

1.5-carat lab diamond from Ritani

Pavé vaulted 1.5-carat lab-grown diamond engagement ring

1.5-carat lab diamond from Ritani

Where to buy 1.5-carat lab-grown diamonds and jewelry

At, 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 a 1.5-carat lab-grown diamond

Compare prices on 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.

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Klaus T
Klaus T

At, Klaus is responsible for everything related to diamond analysis and valuations, the financial aspects of diamond buying, and the impact of diamond mining vs. creating diamonds in the laboratory.

Klaus possesses a profound interest and expertise in diamonds, particularly lab-grown diamonds, and has worked with diamond and lab diamond analysis and valuation for many years. Klaus is an expert in diamond prices and valuation, the investment side of diamonds, and the economic development impact of diamond mining.

Klaus is an ex-diplomat, economic development expert, ex-Googler, and start-up founder. He has 15+ years of expertise in economic development, trade, and resource extraction, and he has worked with the impact of mining on societies and the environment. He is an expert on how resources, such as gold and diamonds and diamond mining, impact communities and exporting countries, and he has worked with the UN, the World Bank, the African Union, the African Development Bank, etc. Klaus later shifted focus to work with data analysis, marketing technology, measurement, and analytics, including 7+ years at Google.

Please contact Klaus if you are looking for data and analysis related to lab-grown diamonds or if you have questions about the economic impact of diamond mining and the shift to creating diamonds in the laboratory.

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