Lab-Grown Diamond Prices – March 2025

LAST UPDATE ON: March 3rd, 2025

For the first time, PriceScope is proud to launch our comprehensive Lab-Grown Diamond Price Analysis, at the beginning of each month, we will provide actionable insights into this rapidly evolving market. Since we started listing lab-grown diamonds in 2020, PriceScope has become a trusted resource for tracking real-time prices on over 400,000+ lab-grown diamonds from the world’s leading online vendors.

This month’s analysis examines how February 2025 market conditions influenced March’s lab-grown diamond pricing, highlighting key changes across different color and clarity categories. Additionally, we explore evolving consumer demand for popular lab-grown diamond shapes, offering data-backed insights into emerging trends and their potential implications for the trade.

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Round Diamond Price Chart

The global market for lab-grown diamonds is projected to reach $29.73 billion in 2025 (Precedence Research, 2025), driven by increasing consumer awareness, improved affordability, and technological advancements in production. Notably, demand for larger carat sizes and fancy shapes such as Emerald and Radiant cuts has surged, reflecting a shift towards unique and high-value designs. Meanwhile, the price gap between lab-grown and natural diamonds has widened, solidifying lab-grown options as an attractive alternative for budget-conscious buyers.

ROUND Lab Diamond Price Changes For The Last 3 months
Diamond Carat Sizes	1/1/2025	2/1/2025	3/1/2025
0.0 – 0.5	6 % ↑	4 % ↑	1 % ↑
0.5 – 1.0	12 % ↑	11 % ↑	-5 % ↓
1.0 – 2.0	9 % ↑	5 % ↑	-10 % ↓
2.0 – 3.0	37 % ↑	38 % ↑	-9 % ↓
3.0 – 4.0	71 % ↑	26 % ↑	28 % ↑
4.0 – 99	38 % ↑	22 % ↑	33 % ↑

Average Price Per Carat For a Round Diamond

Click any cell in the table to see 12 different size categories and 12 different shape prices searchable by color and clarity.

The lab-grown diamond market for round diamonds in the 1.00–1.19 carat range in March 2025 revealed dynamic pricing trends across clarity and color categories. These shifts highlight the evolving interplay of consumer demand, manufacturing trends, and competitive pressures within the lab-grown diamond market.

Premium Grades

Flawless lab-grown diamonds exhibited mixed performance in March. D/FL clarity diamonds saw a modest increase, rising from $794 in February to $808 in March, reflecting stable demand for flawless lab-grown diamonds. Conversely, D/IF clarity diamonds remained relatively flat, moving from $619 to $621, indicating consistent interest in internally flawless options despite broader market adjustments.

Mid-Range Grades

The mid-range clarity categories experienced notable fluctuations. F/VVS1 clarity diamonds declined slightly from $515 in February to $498 in March, reflecting a cooling in demand for high-clarity diamonds within this tier. However, G/VVS2 clarity diamonds saw an increase, rising from $584 to $617, suggesting selective purchasing patterns among consumers seeking value in premium mid-range options.

Lower Grades

The lower-tier clarity grades faced contrasting trends. J/SI1 diamonds experienced a sharp decline, dropping from $1,091 in February to $1,038 in March, pointing to reduced demand in this segment. Meanwhile, K/SI2 diamonds remained stable at $1,272, reflecting steady interest in lower-grade lab-grown diamonds.

Popular Diamond Shapes

Our analysis of the Top 5 Popular Lab-Grown Diamond Shapes from February to March 2025 highlights evolving consumer preferences.

Round diamonds, increasing from 55.14% to 55.86% (+0.72%), remain the benchmark for brilliance and symmetry. Emerald diamonds rose slightly from 11.28% to 11.43% (+0.15%), valued for their step-cut faceting. Cushion diamonds grew from 8.70% to 9.00% (+0.30%). Oval diamonds edged up from 7.66% to 7.86% (+0.20%). Radiant diamonds entered the Top 5 at 5.87%. Radiant diamonds stand out for their hybrid faceting, which merges the brilliance of round cuts with the structured geometry of emerald shapes. This versatile design is favored for its vibrant light performance and bold appeal.

In Closing,

Stay informed with PriceScope’s monthly live data insights, offering the latest trends across all diamond shapes and 12-carat weight ranges. Whether you’re a prosumer, trader, or industry professional, this report provides a data-driven understanding of fair market value for lab-grown diamonds.