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PriceScope presents the third edition of our monthly Lab-Grown Diamond Price Analysis, offering timely insights into this fast-moving segment of the diamond market. Since introducing lab-grown diamonds to our platform in 2020, PriceScope has become a trusted source for tracking real-time pricing across 400,000+ loose diamonds from top online retailers.
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This June 2025 report explores how May market conditions influence current lab-grown diamond pricing, with a detailed breakdown by color and clarity. It also highlights emerging trends in consumer preferences for diamond shapes, providing a data-backed view of where demand is heading and how it may shape the broader diamond industry.
Where can I buy loose lab-grown diamonds? Shop loose lab-grown diamonds at PriceScope. Featuring premium quality lab-grown diamonds at Whiteflash, James Allen, Blue Nile, Adiamor, B2C Jewels, and more.Â
Round Diamond Price Chart
| ROUNDÂ Lab Diamond Price Changes For The Last 3 months | |||
| Diamond Carat Sizes | 4/1/2025 | 5/1/2025 | 6/1/2025 |
| 0.0 – 0.5 | 1 % ↑ | 0 % | 0 % |
| 0.5 – 1.0 | 6 % ↑ | -3 % ↓ | 23 % ↑ |
| 1.0 – 2.0 | -2 % ↓ | -6 % ↓ | 26 % ↑ |
| 2.0 – 3.0 | 4 % ↑ | -17 % ↓ | 35 % ↑ |
| 3.0 – 4.0 | 27 % ↑ | -10 % ↓ | 34 % ↑ |
| 4.0 – 99 | 11 % ↑ | -10 % ↓ | 29 % ↑ |
Average Price Per Carat For a Round DiamondÂ
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 in June 2025 continued to reflect dynamic pricing trends across clarity and color categories, influenced by seasonal shifts in consumer behavior, evolving demand for specific qualities, and steady supply-side activity. Below is a detailed comparison of changes between May and June 2025.
Premium Grades
In the premium segment, flawless (FL) diamonds saw a noticeable price increase, rising from $844 in May to $929 in June. This upward movement suggests renewed interest in top-tier clarity diamonds, likely driven by high-end engagement ring buyers or collectors. Internally flawless (IF) diamonds followed a similar trend, increasing from $626 to $668, underscoring their steady appeal as an accessible premium option. This marks a continued upward momentum in premium-grade pricing.
Mid-Range Grades
Mid-tier clarity grades presented consistent growth. D/VVS1 diamonds rose from $597 to $683, while G/VVS2 moved up from $485 to $542. These increases emphasize the growing popularity of diamonds offering high clarity without the premium cost of FL or IF grades. The pricing shifts in this range highlight buyer behavior that leans toward quality and value. Particularly among those purchasing for milestone occasions.
Lower Grades
Lower-graded categories showed scattered movement, largely due to limited inventory. For example, H/FL jumped to $6,422 in June, but this price reflects a single listing and shouldn’t be interpreted as a broader trend.
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Many lower-clarity graded stones, particularly in the SI1 and SI2 range, represent older stock where sellers are holding firm on pricing despite market conditions. J/SI2 rose from $920 to $1,230, while G/SI1 decreased from $943 to $860. While fluctuations remain present, this segment lacks volume and is not representative of fast-moving market activity.
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Popular Diamond Shapes
Our analysis of the Top 5 Popular Lab-Grown Diamond Shapes from May to June 2025:
This June 2025, round-cut diamonds remain the leading lab-grown diamond shape, holding 51.34% of the market. While they continue to dominate, this reflects a slight dip from May’s 51.97%, which may indicate a gradual shift as consumers show growing interest in alternative shapes.
Oval-cut lab-grown diamonds gain significant traction, rising from 10.24% in May to 12.82% in June. This sharp increase positions the oval shape as the fastest-rising preference this month, likely driven by its elegant appearance and flattering proportions.
Cushion-cut diamonds decrease in popularity, falling from 10.83% to 8.44%, suggesting that May’s growth may have been temporary. Emerald-cut diamonds also continue to decline, moving from 9.12% to 7.51%, reflecting a reduced interest in step-cut styles in favor of more brilliant options.
Radiant-cut lab-grown diamonds experience a minor drop from 6.92% in May to 6.82% in June, indicating steady interest from buyers who value both brilliance and structure.
