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.
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.