Buy lab grown diamonds the smart way

When buying a lab-grown diamond, the same factors used for natural diamonds apply. These are known as the 4Cs: cut, color, clarity, and carat weight. Understanding how these affect appearance and price can help you choose the best diamond for your budget.

Factor	What It Means	Recommended Range
Cut	How well the diamond reflects light and sparkles	Excellent or Ideal
Color	How colorless the diamond appears	D–H
Clarity	Presence of natural inclusions inside the diamond	VS1 – SI1
Carat	The weight and size of the diamond	Depends on budget

Balancing these factors allows buyers to maximize size, sparkle, and value when choosing a lab-grown diamond.

Lab-grown diamonds typically cost significantly less than natural diamonds of the same size and quality.

Carat Weight	Natural Diamond Price	Lab Diamond Price	Average Savings
1 Carat	$1,200 – $12,000	$500 – $1,500	50–70%
2 Carat	$5,000 – $20,000+	$2,000 – $4,000+	50–75%
3 Carat	$13,000 – $30,000+	$3,500 – $7,000+	50–70%
4 Carat	$24,000 – $60,000+	$3,500 – $7,000+	50–70%
5 Carat	$24,000+	$4,500 – $10,000+	50–70%

Because lab diamonds can be produced in laboratories rather than mined, they typically cost significantly less than natural diamonds of the same size. Typical market range varies depending on cut, color and clarity.

Lab-grown diamonds are created using two primary methods: HPHT (High Pressure High Temperature) and CVD (Chemical Vapor Deposition). HPHT mimics the natural conditions under which diamonds form deep within the Earth. CVD diamonds grow from a diamond seed placed in a chamber filled with carbon-rich gas, where carbon atoms bond layer by layer. Both methods produce real, high-quality diamonds. Today, CVD diamonds are more common because they allow greater control over diamond quality and are generally more cost-efficient.

No, lab-grown diamonds do not get cloudy or change color over time. Because they are real diamonds made of pure carbon, they have the same durability and stability as natural diamonds. With proper care and cleaning, a lab-grown diamond will look just as brilliant decades from now as it does today.

A 2-carat lab-grown diamond typically costs between $2,000 and $6,000 depending on cut, color, clarity, and shape. This is often 60–70% less than a comparable natural diamond. You can view current pricing and available options by browsing our curated selection of 2-carat lab-grown diamonds.

Yes, lab-grown diamonds are certified by respected gemological laboratories, most commonly IGI (International Gemological Institute) and sometimes GIA (Gemological Institute of America). IGI is currently the industry leader in grading lab-grown diamonds and provides detailed reports covering the 4Cs, growth method (CVD or HPHT), and any post-growth treatments.

Lab-grown diamonds are graded using the same 4Cs—cut, color, clarity, and carat weight—as natural diamonds. Independent grading labs such as IGI and GIA apply the same standards to ensure accuracy and transparency. For a deeper explanation, read our complete Lab Grown Diamond Grading Report Guide.

Lab-grown diamonds are considered a more ethical and environmentally responsible choice by many buyers. They are conflict-free and avoid the environmental disruption associated with traditional mining. While energy use varies by producer, lab diamonds generally have a lower overall carbon footprint and are a popular option for shoppers seeking eco-friendly diamond alternatives.

No, a jeweler cannot reliably tell the difference between a lab-grown diamond and a natural diamond with the naked eye or basic tools. Specialized laboratory equipment is required to identify growth patterns or trace elements that reveal a diamond’s origin.

Not always. Lab-grown diamonds can have inclusions just like natural diamonds and are graded on the same clarity scale, from Flawless (FL) to Included (I). Because the growth process is controlled, higher-clarity options are often more readily available. You can explore clarity grades across thousands of lab diamonds on our lab-grown diamond page.

Some CVD-grown lab diamonds receive post-growth treatment to improve color by removing a slight brown or gray tint. This treatment is permanent, stable, and does not affect the diamond’s durability or brilliance. Treated lab diamonds can be cleaned ultrasonically and safely worked on by jewelers without issue.

Lab-grown diamonds are real diamonds made of carbon, while moissanite is a diamond simulant made from silicon carbide. Although moissanite looks similar, it has different optical properties and displays more rainbow-like flashes. Lab diamonds have the same brilliance, hardness, and fire as natural diamonds, making them visually and structurally identical.

No. Like most gemstones, lab-grown diamonds should not be viewed as an investment. Their primary value lies in allowing buyers to purchase a larger or higher-quality diamond for significantly less money. Lab diamonds are best chosen for beauty, value, and personal meaning rather than resale potential.

No. Lab-grown diamonds have the same hardness as natural diamonds, ranking 10 on the Mohs hardness scale. This makes them one of the most durable gemstones available and ideal for everyday jewelry like engagement rings. They resist scratching better than almost any other gemstone and maintain their brilliance for decades with normal care.

Yes. Lab-grown diamonds are an excellent choice for engagement rings because they offer the same brilliance, hardness, and durability as natural diamonds at a significantly lower price. This allows many buyers to choose a larger or higher-quality diamond within the same budget while still getting a stone that will last a lifetime.

Lab-grown diamonds typically have lower resale value than natural diamonds because they can be produced in laboratories rather than mined from limited natural deposits. Most buyers choose lab diamonds for their beauty, size advantage, and affordability rather than investment potential.

Lab-grown and natural diamonds are physically identical, but they differ in origin and price.

Feature	Lab Diamond	Natural Diamond
Origin	Created in a laboratory	Formed naturally in the earth
Price	Typically 60–80% cheaper	Higher due to natural rarity
Environmental Impact	Lower overall mining impact	Mining required
Visual Difference	No visible difference	No visible difference

Both types of diamonds have the same hardness, brilliance, and chemical composition.

Rare Carat is an online diamond retailer that helps buyers compare and purchase certified diamonds from trusted suppliers. Each diamond listed on Rare Carat includes grading reports from respected laboratories such as IGI or GIA, allowing shoppers to evaluate quality, price, and cut before purchasing.

Rare Carat is also known for its exceptional customer satisfaction. The company has ranked #1 in Trustpilot’s Jeweler category for two consecutive years, maintaining an average rating of 5.0 out of 5 from more than 3,000 verified buyers.

Platform	Trustpilot Rating
Rare Carat	5.0
Brilliant Earth	4.2
Blue Nile	3.9
James Allen	4.0

By combining transparent pricing, certified diamonds, and highly rated customer service, Rare Carat has become one of the most trusted places to buy lab-grown diamonds online.