The global diamond market is currently experiencing a significant and decisive shift. While round brilliant diamonds have historically been the undisputed champions of the industry, 2026 is firmly establishing itself as the year of the elongated fancy shape.

According to the latest industry data, consumers and investors are showing a clear preference for unique silhouettes that offer superior finger coverage and a more distinct aesthetic. High-quality fancy shapes, particularly in sizes above 2 carats, are not only in high demand but are trading at substantial premiums, marking a pivotal moment for the industry.

Market Dynamics:

Long fancy shapes such as ovals, marquises, and emeralds are outperforming rounds in the 2-carat-and-larger segment. The data reveals that high-quality marquises, long radiants, and long cushions are in critically short supply, which has positioned the marquise cut as the most expensive fancy shape on the market.

In the United States, retail demand remains exceptionally solid, particularly for 2-carat and larger diamonds in both rounds and long fancies. The market can be further detailed by analyzing key performance indicators.

In 2026, the Round Brilliant diamond continues to dominate the global diamond market in overall sales volume, particularly in bridal and commercial jewelry categories. However, it is gradually losing market share in the premium 2+ carat luxury segment as consumer preferences shift toward elongated fancy shapes.

The RAPI™ for 1 ct. Round diamonds declined by approximately 1.4% in April 2026, reflecting softer pricing in standard commercial categories.

Marquise diamonds have emerged as the strongest-performing fancy shape in 2026. Due to extremely limited supply, especially in larger sizes and high-quality makes, the shape is currently commanding some of the highest premiums in the fancy shape market. Supply scarcity continues to push pricing upward across multiple categories.

Long Cushion diamonds are currently among the easiest shapes to sell in the wholesale market because of strong consumer demand and their popularity in engagement rings.

Elongated cushions are trading at approximately 20% to 25% premiums over traditional square cushions, particularly for stones with desirable length-to-width ratios and excellent cutting quality.

Oval and Emerald cut diamonds are both performing strongly in the US market, especially in sizes above 2 carats. Demand remains particularly healthy for well-cut stones in the D–I color range and VS–SI clarity categories. These shapes continue to attract buyers looking for elegant elongated designs and strong visual spread.

In contrast, Princess cut diamonds remain significantly weaker compared to other fancy shapes. Demand and market liquidity are lower, causing these stones to frequently trade at discounts relative to more popular fancy cuts. Consumer preference in 2026 continues to favor elongated and vintage-inspired shapes over traditional Princess cuts.

The Reigning Fancies: A Deep Dive into Cut Dynamics

The dominance of elongated fancies is not a single trend but a collection of distinct movements for each shape, each driven by unique consumer desires.

The Marquise Cut:

The marquise cut, once considered a vintage option, has made a powerful comeback. Its long, slender silhouette offers the most dramatic finger-elongating effect of any shape, making a 1.50-carat marquise appear as large as a 2.00-carat round. This exceptional face-up area, combined with its rarity, is why trade publications note that high-quality marquises are in critically short supply and command the highest premiums in the market.

The "Long Cushion" Hybrid:

One of the most fascinating developments in 2026 is the rise of the elongated cushion cut. These hybrids successfully combine the soft, romantic, pillow-like appearance of a classic cushion with a modern, elongated silhouette.

A square cushion is considered standard, but a well-proportioned "long cushion" is now a sought-after commodity. The data from the market is clear: these long cushion cuts are described as some of the easiest to sell, trading at a significant 20% to 25% premium over their square counterparts.

The Oval Cut:

The oval diamond has successfully transitioned from a celebrity favorite to a mainstream staple. Its popularity is driven by its brilliant sparkle, which is similar to a round diamond, but with a flattering, elongated shape.

As noted in the analysis, there is a solid US market for elongated ovals with good shape and quality, particularly in the D-I, VS-SI categories. The market has become discerning: poorly cut ovals with a prominent "bow-tie" effect are illiquid, while well-cut, elongated specimens are commanding premiums.

Global Market Pulse: Regional Demand and Supply

The shift to elongated fancies is a global phenomenon, but it manifests differently across key trading hubs. Understanding these regional nuances is crucial for buyers and sellers.

United States: The US remains the strongest pillar of the global diamond trade. Wholesalers report that demand is particularly strong for stones in the D-I color and VS-SI clarity range, where buyers seek an optimal balance between luxury appearance and value. Larger US wholesalers are outperforming smaller ones due to their better access to these sought-after goods.

India: The manufacturing sector is slowing down for the annual May summer recess, which is further reducing already subdued rough demand. However, the domestic market is showing growth, with steady demand for 2-carat-plus diamonds, particularly in D-G, VVS-VS qualities.

Belgium & Israel: Both hubs are seeing a steady recovery in sentiment. Belgium's trading figures have been boosted by a shift of goods from Dubai due to geopolitical tensions. In Israel, dealers report steady prices for larger fancy shapes, though the local market remains cautious.

Supply and Pricing:

The key driver behind the premium pricing for elongated fancies is a fundamental supply shortage. The difficulty in sourcing these stones is compounded by global production realities. De Beers, the world's largest diamond miner by value, is currently producing at as much as 35% under capacity.

The Diamond Index (RAPI) provides a clear picture of this fragmented price recovery. In April, while the index for 1-carat diamonds fell 1.4%, prices for smaller goods saw a healthy rebound.

The RAPI for 0.30-carat diamonds rose 2.6%, and the 0.50-carat index increased 1.3%. This data illustrates the growing divide in the market: smaller goods face price pressure, while high-demand categories like large fancies are seeing sustained interest. Notably, diamonds 7 carats and up remain exceptionally hot, especially those graded D-Flawless.

Where to Find Premium Fancy Shape Diamonds -

Given the difficulty in sourcing high-quality fancy shapes, buyers are increasingly turning to specialized platforms. For those ready to invest in these trending cuts, marketplaces like CaratX offer a global inventory.

The CaratX marketplace connects buyers and sellers across 18+ international countries, providing access to a curated selection of natural diamonds. Shoppers can explore specific collections, such as lab grown diamonds, gemstones, and jewelry, directly through the platform.

Start Selling Internationally with CaratX

For sellers looking to capitalize on the soaring demand, CaratX offers a seamless entry into the global market. The platform simplifies the process of listing inventory and connecting with B2B and B2C buyers worldwide.

Sellers can register on the CaratX marketplace here to start selling diamonds and jewelry. The CaratX seller plan allows businesses to reach a broad international audience, with seller resources available to guide them through the process. Potential sellers can find more details about pricing and plans by checking the official pricing page.

Frequently Asked Questions (FAQs)

Q: Are fancy shape diamonds more expensive than round diamonds? A: In 2026, this is no longer a simple answer. While many fancy shapes like emerald and cushion can be 10-20% less than rounds for comparable quality, high-demand elongated shapes like marquise, long cushions, and ovals are now trading at a premium due to their scarcity and popularity. Anyone starting to sell diamonds should monitor these premium segments closely.

Q: What is the most popular diamond shape? A: Round diamonds still hold the largest overall market share. However, for engagement rings and luxury jewelry, oval diamonds are now almost as popular (25% of couples) as rounds (26% of couples).

Q: How can I sell diamonds internationally? A: You can join a global B2B and B2C marketplace like CaratX. By registering as a seller, you gain immediate access to a global buyer network in over 18 countries, allowing you to list your jewelry and diamonds for international sale.

Q: Which diamond shape looks the biggest? A: Marquise and oval cuts offer the best size perception for their carat weight. Due to their elongated shape, they can appear up to 10–15% larger than a round diamond of the same carat.

Learn more about similar topic in an earlier blog:

https://caratx.com/blog-post/market-insight-small-diamonds-030-ct-050-ct-rebound-sharply-in-april-2026-as-supply-tightens

https://caratx.com/blog-post/market-outlook-2026-2030-a-snapshot-of-unprecedented-growth

https://caratx.com/blog-post/beyond-the-round-brilliant-why-2025-is-the-year-of-the-fancy-shape-diamond

https://caratx.com/blog-post/the-diamond-market-in-q1-2026-a-bifurcated-market-strategic-contraction-and-the-resilience-of-natural-stones