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Diamond Prices in 2026: Current Price per Carat and Trends
The diamond price in 2026 is experiencing significant fluctuations related to international markets, Asian demand, and the emergence of synthetic diamonds. At Diamantaires Paris OG, we monitor these developments daily to guarantee you the best price when appraising and buying your stones. This page presents updated prices, market trends, and the keys to understanding the value of your diamond.
Free appraisal at 01 48 87 23 37 Send your photos via WhatsAppWhat is the current diamond price in 2026?
Diamonds do not have a single official quotation like gold or silver. Its price is determined by several reference indices, including the Rapaport Diamond Report, the global reference publication used by all professionals. This report establishes wholesale prices in US dollars per carat, segmented by weight, color, clarity, and cut shape.
In 2026, prices vary considerably according to four fundamental criteria, known as the 4Cs:
- Carat (weight): expressed in carats (1 carat = 0.20 grams). The price per carat increases exponentially with weight.
- Color: from D (exceptional white, the rarest) to Z (tinged yellow). Grades D to F command a significant premium.
- Clarity: from IF (Internally Flawless, without inclusions) to I3 (inclusions very visible to the naked eye).
- Cut: the quality of the cut influences brilliance. An "Excellent" diamond is worth 20-40% more than a "Good" one.
Indicative diamond prices per carat in 2026
The table below shows the resale price ranges for certified natural diamonds, in round brilliant cut. These values are estimates based on current professional market prices.
| Weight | Common quality (G-H, VS) | Good quality (E-F, VVS) | High quality (D-E, IF-VVS1) |
|---|---|---|---|
| 0.30 carat | €600 - €1,200 | €1,000 - €2,000 | €1,500 - €3,000 |
| 0.50 carat | €1,500 - €2,500 | €2,500 - €4,000 | €3,000 - €5,000 |
| 0.70 carat | €2,500 - €4,000 | €4,000 - €6,500 | €5,500 - €9,000 |
| 1 carat | €4,000 - €7,000 | €7,000 - €12,000 | €8,000 - €18,000 |
| 1.50 carats | €7,000 - €13,000 | €12,000 - €22,000 | €18,000 - €35,000 |
| 2 carats | €12,000 - €22,000 | €20,000 - €40,000 | €25,000 - €60,000 |
| 3 carats | €25,000 - €45,000 | €40,000 - €80,000 | €50,000 - €120,000 |
| 5 carats and above | €60,000 - €120,000 | €100,000 - €250,000 | €150,000 - €500,000+ |
These prices are indicative and correspond to natural round brilliant diamonds. The actual value depends on the precise 4Cs of your stone, the presence of a GIA certificate, and market conditions at the time of sale.
Price according to diamond cut shape
The cut shape directly influences the resale price. The round brilliant cut is the most sought after and commands the highest prices. Other shapes, called "fancy shapes," generally trade at a discount of 10-30% compared to round.
| Cut shape | Premium / Discount vs Round | Demand on the secondary market |
|---|---|---|
| Round brilliant | Reference (highest price) | Very strong — most liquid |
| Cushion | -10% to -15% | Strong, very trendy since 2020 |
| Oval | -10% to -20% | Strong, popular for engagement rings |
| Princess (square) | -15% to -25% | Average, less sought after than before |
| Emerald | -15% to -25% | Stable, appreciated in high jewelry |
| Pear (drop) | -15% to -25% | Average to strong depending on size |
| Marquise | -20% to -30% | Low, considered vintage |
| Asscher | -20% to -30% | Niche, appreciated by connoisseurs |
| Radiant | -15% to -20% | Growing, good brilliance/price compromise |
How does the Rapaport Diamond Report work?
The Rapaport Diamond Report, published every Thursday by Martin Rapaport since 1978, is the global reference for diamond prices. It is a wholesale price grid, in US dollars per carat, for GIA-certified round brilliant diamonds. The grid is organized by:
- Weight: 0.01 to 10.99 carats, with brackets (0.30-0.39 ct, 0.40-0.49 ct, 0.50-0.69 ct, 0.70-0.89 ct, 0.90-0.99 ct, 1.00-1.49 ct, etc.)
- Color: D to M, in columns
- Clarity: IF to I3, in rows
Rapaport prices are indicative wholesale prices. Real transactions are made "above" or "below" Rap, expressed as a percentage discount or premium. For example, a diamond traded at "Rap -15%" means it sells 15% below the listed Rapaport price. In periods of high demand, rare stones (D-IF over 2 carats) can trade above Rap.
Factors influencing the diamond price in 2026
Global demand
China and India represent over 50% of global diamond consumption. The United States remains the leading market with about 45% of global jewelry diamond sales. An economic slowdown in these countries directly impacts prices. In 2026, the economic recovery in Asia supports prices for higher-quality stones (1 carat and above, color D-G).
The impact of synthetic diamonds
The rise of lab-grown diamonds (produced by CVD and HPHT methods) has profoundly changed the market since 2020. Synthetic diamond prices have dropped by more than 70%, making these stones very accessible. For natural diamonds, the impact varies by size:
- Under 0.50 carat: 30-50% decline in natural prices, strong competition from synthetics
- 0.50 to 1 carat: 15-25% decline, the market is stabilizing
- 1 to 2 carats: moderate decline of 5-15%, buyers still prefer natural
- Over 2 carats: little or no impact, large natural diamonds remain rare and sought after
To learn more about the distinction between the two types of stones, see our article natural diamond vs lab-grown diamond.
The price of gold and precious metals
Although diamonds and gold are distinct markets, the historical rise in the gold price in 2025-2026 has an indirect positive effect. Investors seeking safe havens are increasingly interested in tangible assets, which supports interest in investment diamonds of exceptional quality.
GIA certification
A GIA-certified diamond trades at a premium of 10-30% compared to an uncertified stone of equivalent quality. The certificate from the Gemological Institute of America is recognized worldwide and guarantees the objectivity of the appraisal. It is the essential standard for transactions of valuable diamonds.
Diamond price trends: 2024-2026
After two years of correction (2023-2024), the natural diamond market is showing signs of stabilization in 2026. Here are the major trends observed:
- Small stones (< 0.50 ct): prices remain under pressure due to competition from synthetics. This segment represents the largest volume of transactions but with reduced margins.
- Medium stones (0.50-1.50 ct): stabilization after a 15-20% decline. Demand for engagement rings supports this segment.
- Large stones (2 ct and above): prices hold or rise slightly, driven by rarity and collector demand.
- Natural fancy-colored diamonds (fancy yellow, pink, blue): prices continue to rise, especially for pink stones after the closure of the Argyle mine in 2020.
When is the right time to sell a diamond?
There is no universal "best time" to sell a diamond, but certain factors can work in your favor:
- High gold price: when the gold price is high, diamond jewelry also benefits from better overall valuation.
- High seasonal demand: the periods before Christmas, Valentine's Day, and wedding season (May-September) see increased demand.
- Having a GIA certificate: if your diamond is not certified, we can assess whether it is worthwhile to get it certified before the sale (for stones over 1 carat, it is often profitable).
- Stable or rising market: in 2026, the market for stones over 1 carat is favorable for sellers.
How to have your diamond appraised at Diamantaire Paris?
Our team of GIA-trained gemologists offers you a free and confidential appraisal. The process is simple and fast:
- Contact: call 01 48 87 23 37 or send photos via WhatsApp. We give you an initial indicative estimate.
- Appraisal in our showroom: our gemologist analyzes your diamond under a 10x loupe, measures its proportions with a Leveridge gauge, checks UV fluorescence, and evaluates the 4Cs.
- Purchase offer: we present a price based on the updated Rapaport price, with a detailed explanation of each criterion.
- Immediate payment: if you accept, payment the same day by instant transfer, banker's draft, or cash (legal limit of €3,000).
We buy all types of diamonds: stones set in jewelry, certified or uncertified loose diamonds, inheritance diamonds, investment diamonds, and professional diamond lots.
Visit our showroom in the heart of Paris
Our showroom welcomes you in a confidential and secure setting, at 43 Rue Beaubourg in the Marais (Paris 3rd). A few minutes from the Centre Pompidou and Place Vendôme, we are easily accessible by public transport.
Address: 43 Rue Beaubourg, 75003 Paris
Opening hours: Monday to Friday, 10 am to 1 pm and 2 pm to 6:30 pm
Metro: Rambuteau (line 11) or Arts et Métiers (lines 3 and 11)
Phone: 01 48 87 23 37
You can come without an appointment for a free, no-obligation appraisal. For high-value diamonds (over 2 carats), a prior call allows our specialized gemologist to give you their full attention.
Call 01 48 87 23 37 WhatsAppLooking for someone to appraise a stone? Discover the profession of diamond dealer in Paris and what sets them apart from a jeweler.
Frequently asked questions
Your questions about diamond prices
Is diamond a good investment in 2026?+
Diamond is not a financial asset in the classic sense: there is no stock market listing, no dividend, and limited liquidity. On the other hand, diamonds of exceptional quality (from 2 carats, color D-F, clarity IF-VVS1, GIA certified) have historically maintained or increased their value over the long term. It is a tangible, portable, and discreet asset that can complement a diversified portfolio.
Why is the resale price of a diamond lower than the purchase price?+
The retail price in jewelry includes many costs: manufacturing the piece, retailer margin (often 100 to 300%), VAT (20%), marketing, and boutique rent. When reselling, the value is based solely on the stone and precious metal, without these additional costs. This is why a diamond purchased for €10,000 in a jewelry store can have a resale value of €3,000 to €6,000 depending on its quality.
Does a diamond without a certificate have value?+
Yes, an uncertified diamond retains intrinsic value based on its actual characteristics. Our gemologists evaluate each stone using the same criteria as the GIA. However, the absence of a certificate generally results in a discount of 10 to 30%, as the end buyer must rely solely on our expertise. For diamonds over 1 carat, we may recommend having them certified before sale if it significantly increases their value. For more information, see our guide on selling a GIA-certified diamond.
Are laboratory-grown diamonds decreasing the value of natural diamonds?+
The impact is real but variable. Small natural diamonds (under 1 carat) face the strongest competition from synthetics, with price declines of 30 to 50% since 2020. In contrast, natural diamonds over 2 carats are barely affected: their natural rarity and heritage value clearly distinguish them from laboratory-grown stones. In 2026, the market seems to have found a new balance, with a clear segmentation between the two types of stones.
How can I verify if my diamond is natural or synthetic?+
It is impossible to distinguish a natural diamond from a synthetic one with the naked eye or a loupe. Only specialized instruments (spectroscopy, advanced fluorescence) can differentiate them. If your diamond has a GIA or HRD certificate, it always indicates the origin (natural or laboratory). Without a certificate, our gemologists have the necessary equipment to perform this verification in our salon. See our article on natural diamond vs. laboratory-grown diamond for more information.
Where can I track diamond prices?+
The main sources for tracking diamond price trends are: Rapaport Diamond Report (paid, for professionals only): the global reference · IDEX Online: professional trading platform with price indices · Diamantaires Paris: we publish updated estimates and provide you with price ranges for free during our appraisals
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