PriceScope’s August 2025 report tracks the latest movements in natural diamond pricing, shaped by tightening global supply, evolving shape preferences, and continued pressure from lab-grown diamonds. While premium-grade stones in the D to F color range with VS to VVS clarity remained stable, pricing across mid-range and lower-grade categories reflected selective demand and increased price sensitivity. The RapNet Diamond Index for 1-carat stones declined by 0.2%, and PriceScope’s internal data showed a 4% drop in 0.5–1.0ct round diamond prices month over month.
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August pricing reflects stability in premium-grade diamonds, selective demand across mid-tier categories, and early indications of stability in lower-grade goods. As lab-grown diamonds reshape the broader market, natural diamonds continue to show differentiated performance by clarity and color tier.Â
Top-end stones remained stable. D/FL decreased slightly from $12,840 to $12,698, while D/IF recorded a minor adjustment to $13,178, holding firm above $13,000. E/FL declined to $10,342, and E/IF eased to $9,132, both still within expected margins. F/IF sustained its upward shift from July, closing at $11,232.
Demand in this category remains consistent, driven by rarity, investor confidence, and long-term value retention.
Movement across the mid-tier was mixed. F/VVS1 increased to $9,009, building on last month’s momentum. E/VVS2 rose to $8,175, while F/VS1 advanced to $7,433. G/VS2 declined slightly to $5,551, and H/VS2 was largely flat at $4,232.
This price activity reflects careful buying. Consumers in this segment continue to evaluate price-to-appearance value, often cross-referencing against premium lab-grown options.
Some improvement was noted in select lower-grade pairings. I/SI1 increased to $3,275, up from $3,221. K/SI2 ticked up to $1,937, and J/SI1 rose to $2,558. H/SI1 and G/SI2 showed little movement.
Entry-level diamonds remain price-sensitive, but targeted demand at specific clarity/price intersections is emerging.
August trends reinforce a tiered market structure. Premium goods remain stable and in demand. Mid-range stones continue to trade within a tighter value band, while lower grades may be approaching a floor. Continued segmentation will be critical as natural diamonds navigate value positioning in a lab-grown-influenced market.
Consumer preferences across the Top 5 Popular Natural Diamond Shapes remained largely consistent from July to August 2025, though subtle shifts reveal evolving sentiment toward select fancy cuts.Â
Round diamonds maintained their position as the dominant shape in the market, increasing from 69.42% in July to 71.33% in August (+1.91%). The continued growth highlights strong buyer confidence in this timeless, brilliant cut, reaffirming its status as the industry benchmark.
Oval diamonds declined from 7.86% to 7.36% (–0.50%), reflecting a gradual cooling in demand. While still viewed as a modern classic, the drop suggests that consumer interest may be stabilizing or shifting toward more structured fancy cuts.
Cushion diamonds decreased slightly from 6.80% to 6.36% (–0.44%). After a notable rise in July, this dip may indicate a short-term correction rather than a trend reversal, as interest in vintage-inspired aesthetics remains present.
Emerald diamonds continued to lose market share, falling from 6.01% to 5.58% (–0.43%). The step-cut’s clean lines and subtle fire may appeal to a niche audience, but broader preference appears to lean toward brilliant cuts with greater light performance.
Pear-shaped diamonds saw a marginal increase from 3.24% to 3.29% (+0.05%), suggesting stable demand within this category. Though it remains the least dominant shape in the Top 5, its unique silhouette retains a loyal following.
PRO TIP: When shopping for loose natural diamonds, it’s important to consider factors like cut quality and vendor services, such as upgrade options and return policies, which can significantly influence the price.
Retail Diamond Prices Chart Updated Monthly.
PriceScope delivers monthly insights into the natural diamond market for consumers, traders, and industry professionals. This July report captures the latest shifts in pricing trends across premium, mid-range, and lower-grade…
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