The Asia Pacific region is currently the world's most expensive jewelry market. After the COVID pandemic, the regional luxury ornament market is back in form. Historically, luxury jewelry was a status symbol. Over time, these rare gems and jewelry have become a potential investment asset.
Today, we will learn more about the current market status and its future potential.
Overview of the World's Most Expensive Jewelry
To understand the range of the expensive jewelry market, you must go through the deciding factors. Here are the 6 most important things to consider before you decide on your jewelry investment:
Key Metrics to Compare Jewelry Values
Carat: Carat increases exponentially, not linearly. If we give a closer look at the 2025–2026 market stats, buyers paid premiums of 5% to 10% for stones that hit "magic numbers" (like exactly 1.00 ct). For the 3-carat range, market share is expected to grow by 12% within this year.
Clarity and color: In 2026, regardless of commercial or luxury collections, colored diamonds (pink, blue, and yellow) will be the ultimate asset. Pink diamonds have experienced 443% increased growth over the last two decades.
Cut: Often, a "triple excellent" cut adds a 15-20% premium over a “good cut” due to the "fire" and "brilliance."
Provenance: It's the “soul” of the price. A piece owned by any royalty or global figure can amplify the bidding price 5-10x. For instance, Marie Antoinette’s pearl pendant sold for $36.2 million.
Auction house: Market rulers like Sotheby’s or Christie’s are positioned as “trusted advisors." Their networks expand globally, which fuels the competition fever.
Trends Over the Last Decade
By the end of 2026, the expensive jewelry market is projected to grow between 3% and 5%.
“Passion assets” are outperforming arts and wine in the 2025/2026 index. Over the last 10 years, jewelry has seen a 33.5% surge in market price.
Jewelry is acting as a wearable bank account. A recent study suggests the growth rate was around 33.5%.
Historical pieces are renowned for their high resale value. Modern high jewelry brands are growing at a CAGR of 7.8%
Top 15 Most Expensive Jewelry Pieces in History
Expensive jewelry was once a royal signature. They were often treated as national investments. A few of them became historical monuments; we often call them priceless.
Although there is no fixed standard. We have arranged information on the 15 most significant historical monuments. Our goal is to offer you a clear insight into this realm.
1. The Koh-i-Noor Diamond Crown ($2-$20 Billion)
Considering the Koh-i-Noor's great historical value, it's almost priceless.
The 105.6-carat oval-shaped, brilliant-cut gemstone now illuminates one of the crowns of the British royal family.
This prestigious piece’s insured replacement value is worth $250 million.
2. The Cullinan I Sceptre ($2 Billion)
Worldwide, this rare gemstone is known as the “great star of Africa.”
This pear-shaped, 530.2-carat diamond is the largest clear-cut diamond in the world. It was mined from Pretoria in 1905.
Later, it was presented to King Edward VII in 1907 by the government of the Transvaal Colony. Currently, it is set at the British Sovereign's sceptre with cross.
3. The Hope Diamond Pendant ($250-$350 Million)
The Hope Diamond known as the most vibrant fancy blue diamond ever to exist in history. In 1958, renowned diamond businessman Harry Winston donated to the Smithsonian Institution.
This 45.52-carat diamond was mined in India, and then French gem merchant Jean-Baptiste Tavernier purchased it in 1668. He sold it to King Louis XIV. Later, it was somehow stolen during the French Revolution. It is set in a platinum pendant surrounded by 16 white diamonds
After a few hand passes, it appeared in London diamond merchant Daniel Eliason’s personal collection. Then, banker Henry Philip Hope purchased this in 1839. He renamed it “Hope Diamond."
The National Museum of Natural History in Washington, D.C., purchased it, and it is now part of their permanent display.
4. Heritage in Bloom Necklace ($200 Million)
This famous, 383.4-carat, multi-gemstone necklace was born in 2015. This signature piece was a special creation by famous Chinese jewelry craftsman Wallace Chan for Chow Tai Fook.
Its centerpiece has a 104-carat, D-color, brilliant-cut round diamond, accompanied by 11,551 (including pink diamonds). It has 27 functions to create 27 different wearing styles. [Source: The jewellery editor]
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5. Graff Peacock Brooch ($100 Million)
Graff Diamonds first displayed it at TEFAF Maastricht in 2013. This marvelous brooch represents the pinnacle of fine jewelry. The piece comes with a total of 120.81 carats, with 1,305 diamonds engraved on its fan-shaped design.
Besides traditional white diamonds, the brooch includes pink, yellow, and orange-colored diamonds. The pear-shaped center offers detachable functions, currently holding a rare 20.02-carat fancy deep blue diamond.
6. The Centenary Diamond ($100 Million)
This rare piece was mined back in 1986 in South Africa’s Premier Mine. Then famous jeweler Gabi Tolkowsky gave it the heart shape with 247 facets. Gabi’s 154 days of hand-cutting hard work transformed the 566-carat piece into its present 273.85-carat heart-shaped masterpiece.
The rare colorless diamond came to auction back in 1991 to celebrate De Beers' centenary. De Beers later sold this exquisite unit, and its current status is unknown.
7. Wittelsbach- Graff Diamond ($80 Million)
This 31.06-carat, flawless-clarity, fancy deep blue gemstone was a part of the Austrian and Bavarian crown jewels for 300+ years. Subsequently, jeweler Laurence Graff bought it for $24.26 million in 2008.
It was a record price that year. It is now in possession of Sheikh Hamad bin Khalifa Al Thani. He brought it for 80 million, making it the 7th most precious jewel of all time. [Source: Wittelsbach-Graff]
8. Pink Star Diamond ($71.2 Million)
This rare kind of pink diamond was discovered in 1999 in South Africa. Famous global auction house Sotheby's sold it to Sotheby's, Chow Tai Fook Enterprises.
Back in 2011. The pink diamond features 59.60 carats and is renowned for its extraordinary, unique transparency. [Source: Sotheby's]
9. Williamson Pink Star ($57.7 Million)
This flawless 11.15-carat cushion-cut stone ranks as the second finest of its kind.
It was sold back in 2022 in an auction at Sotheby’s Hong Kong. Its current marketvaluation is estimated close to 60 million.
10. The Oppenheimer Blue Diamond Ring ($57.5 Million)
The ring was the personal favorite of Sir Philip Oppenheimer of the De Beers family. It features surely the most famous among rectangular-cut diamonds.
Moreover, it is also known as the largest and most expensive blue diamond. Back in 2016, Christie’s sold at their Geneva auction. [Christie's]
11. L’Incomparable Diamond Necklace ($55 Million)
This necklace secured its place as the most expensive necklace in the world in the Guinness World Records. It features a set of flawless diamond pieces, totaling 407.48 carats.
The yellow-brown centerpiece is one of the largest and rarest diamonds ever known. This luminous yellow diamond was mined in Congo in 1980.
12. The Blue Moon of Josephine ($48.4 Million)
It made a record as the highest-priced diamond ever per carat sold. Hong Kong billionaire and business tycoon Joseph Lau Luen-hung brought it as a gift to his seven-year-old daughter.
13. The Graff Pink ($46.2 Million)
Also famous as one of the most desired gems in history. In 2010, Sotheby’s Geneva auction sold it to Laurence Graff.
He reshaped the original 24.78-carat intense pink diamond. Now this revived 23.88-carat diamond is still in his possession.
14. The Hutton-Mdivani Jadeite Necklace ($27.4 Million)
It was a precious collection of the Qing dynasty. In 2014, the piece changed hands from the Sudevaiz Collection to the Cartier Collection. It was also one of the highest recorded jadeite necklaces.
American heiress Barbara Hutton and Princess Nina Mdivani are renowned people who owned this precious piece.
15. Chopard 201-Carat Watch ($25 Million)
Featuring 874 high-grade diamonds, this heavenly Chopard premium piece weighs 201 carats. Center stones include blue, white, yellow, and pink diamonds. The entire watch has 874 diamonds
The Most Expensive Jewelry Brands
We went through the top regional stock purchase headlines to present you with a heavyweight echelon of the world's most expensive jewelry market. To maintain the highest level of transparency, we investigated their past 10 years' major sales records, market info, and best deals.
Let’s see the best global mansions in this unworldly luxury jewelry investment landscape.
1. Cartier (founded in 1847 by Louis-François Cartier)
Dominating the market with a brand value of $12.4 billion, Cartier is the undisputed leader in hard luxury.
Among their recent appealing collections, the Love and Juste un Clou segments earned a fanbase on their own level. The brand is widely considered the most reliable investment-grade asset due to its high resale value.
Jaw-dropping Success: In 2024, Cartier UK sales topped the £250 million benchmark, topping its key company, Richmond. Despite a global luxury slowdown, their sales value spiked with 11% growth.
2. Van Cleef & Arpels (Founded in 1896)
With an estimated revenue of $3.7 billion, this Maison is famous for its Alhambra (clover) motif and the "Mystery Set" technique. [Richemont Annual Report]
The brand’s secondary market value is unparalleled. It currently maintains a 95% sell-through rate at major auctions.
Notable Milestone: Their growth from 2023 to 2025 was one of the iconic success stories in global brand history. They experienced 35% surge in global auction prices.
3. Harry Winston (Founded in 1932 by Harry Winston)
With an average entry-level price of $120,000, Winston is the "King of Diamonds."
Historically, they are famous for owning the Hope Diamond.
Headline Success: In the 1930s, the brand made global news by acquiring the $1.2 million Baldwin Estate, which established Harry Winston as a global diamond powerhouse overnight. [Harry Winston Archives]
4. Graff (Founded in 1960 by Laurence Graff)
Graff operates a "mine-to-market" model and is famous for its rare yellow diamonds.
They hold the record for buying and recutting the Wittelsbach-Graff Diamond for $80 million.
Jaw-dropping Growth: In 2010, the purchase of the Graff Pink for $46 million solidified their position as the world's leading high-investment diamond house. [The Guardian]
5. Bvlgari (Founded in 1884 by Sotirios Voulgaris)
Bvlgari generated approximately $3.2 billion in revenue, driven largely by its Serpenti and B.zero1 lines.
The Elizabeth Taylor Collection, featuring iconic Bvlgari emeralds, sold for $116 million in 2011.
Growth Spike: The 2021-2022 100th-anniversary campaign for Serpenti resulted in a 20% increase in global brand search interest. [Google Trends / Business of Fashion]
6. Tiffany & Co. (Founded in 1837 by Charles Lewis Tiffany)
Now a jewel in the LVMH crown, Tiffany's brand value is estimated at $5.9 billion.
The 2021 acquisition by LVMH for $15.8 billion was the largest deal in the history of the luxury industry.
Recent Hotcake: The Tiffany Lock collection, launched in 2022, became an instant bestseller, appealing to a younger, gender-neutral demographic. [JCK Online]
7. Buccellati (Founded in 1919 by Mario Buccellati)
This Italian house is famous for its Macri and Opera collections, featuring gold engraved to look like silk.
They are the official jeweler to the Vatican, a track record spanning decades.
Success Year: Following its 2019 acquisition by Richemont, the brand reported a 15% year-on-year revenue increase due to rapid Asian expansion. [Reuters - Richemont Financials]
8. Chopard (Founded in 1860 by Louis-Ulysse Chopard)
Chopard is the creator of the Happy Diamonds collection, where diamonds float between sapphire crystals.
In 2018, they made headlines as the first luxury brand to commit to 100% Ethical Gold.
Notable Track Record: They have been the official partner of the Cannes Film Festival since 1998, designing the Palme d'Or trophy. [Cannes Festival Official]
9. Boucheron (Founded in 1858 by Frédéric Boucheron)
Boucheron was the first jeweler to open on Paris's Place Vendôme.
The Quatre ring is their primary "hotcake," known for combining four different gold textures.
Growth Metric: In 2024, despite a wider luxury slowdown, Boucheron reported a double-digit revenue increase in the Japanese market. [Kering Group Annual Report 2024]
10. Chanel Fine Jewelry (Founded in 1932 by Gabrielle Chanel)
With an estimated revenue of $1.1 billion, Chanel’s Coco Crush is currently one of the most desired collections in the world.
The 2022 "1932" High Jewelry collection celebrated the 90th anniversary of Gabrielle Chanel’s first diamond exhibition.
Headline: The brand’s expansion into dedicated jewelry-only boutiques in 2024 led to record-breaking footfall in London and Paris. [WWD - Chanel Jewelry Boutiques]
11. Chaumet (Founded in 1780 by Marie-Étienne Nitot)
As the official jeweler to Napoleon and Empress Joséphine, Chaumet has an unrivaled royal track record.
The Joséphine collection, featuring rings shaped like miniature tiaras, is their top-selling recent line.
Success Year: 2025 marked a milestone 245th anniversary, resulting in a 25% increase in Asian high-jewelry commissions. [Jing Daily - Chaumet in China]
12. Piaget (Founded in 1874 by Georges-Édouard Piaget)
Piaget is the master of ultra-thin movements and jewelry-watch hybrids, famously seen in the Limelight Gala series.
The Possession rotating ring collection is a global commercial staple for the brand.
Jaw-dropping Era: The 1960s-70s saw Piaget become the jeweler of choice for the "Jet Set," including icons like Jackie Kennedy and Andy Warhol. [Architectural Digest - The Piaget Society]
13. Mikimoto (Founded in 1893 by Kokichi Mikimoto)
Mikimoto remains the world leader in pearls. Marilyn Monroe's famous pearl necklace, gifted by Joe DiMaggio, was from their signature collection.
Their recent M Collection has modernized the brand, appealing to a younger, more minimalist audience.
Notable Record: They were the official jeweler of the Miss Universe pageant from 2002 to 2007 and again from 2017 to 2019. [Les Pierres de Julie]
14. David Yurman (Founded in 1980 by David and Sybil Yurman)
As a premier American designer brand, Yurman is famous for the Cable Motif, which is patented and iconic.
They revolutionized the industry in the 2000s by creating "Everyday Luxury," making fine jewelry accessible for daily wear.
Recent Success: A 2025 collaboration with the Star Wars franchise for high-end jewelry sets made international headlines. [Hypebeast - David Yurman x Star Wars]
15. Messika (Founded in 2005 by Valérie Messika)
Messika is the youngest brand to reach the global top 15, with the Move collection (sliding diamonds) becoming a viral phenomenon.
In 2023, the brand saw a 25% jump in revenue following a high-jewelry expansion endorsed by Beyoncé.
Notable Milestone: Their 2024 High Jewelry show at Paris Fashion Week was the most viewed jewelry event on social media that year. [Launchmetrics Data]
Top-Selling Auction Items by Brand
Rank |
Item Name |
Sale Price (USD) |
Auction House / Year |
1 |
The CTF Pink Star |
$71.2 Million |
Sotheby's (2017) |
2 |
The Williamson Pink Star |
$57.7 Million |
Sotheby's (2022) |
3 |
The Oppenheimer Blue |
$57.5 Million |
Christie's (2016) |
4 |
The De Beers Blue |
$57.5 Million |
Sotheby's (2022) |
5 |
The Winston Pink Legacy |
$50.4 Million |
Christie's (2018) |
6 |
Blue Moon of Josephine |
$48.4 Million |
Sotheby's (2015) |
7 |
The Graff Pink |
$46.2 Million |
Sotheby's (2010) |
8 |
The Prince Diamond |
$39.3 Million |
Christie's (2013) |
9 |
Marie Antoinette’s Pearl |
$36.2 Million |
Sotheby's (2018) |
10 |
The Orange (Vivid Orange) |
$35.5 Million |
Christie's (2013) |
Auction Houses & Sales Insights (2025-2026)
Across the global auction market, raw materials are currently being considered as the key factor. In the US market, it's now experiencing a K-shaped recovery after the COVID pandemic.
In 2025, the projected auction turnaround confirmed a sharp spike. The two big houses, Sotheby’s and Christie's, delivered a clear market rebound. Sotheby’s led with $7 billion in total sales, while Christie’s surpassed $6.2 billion.
The 2026 Key Catalysts in Expensive Jewelry Auction
J.P. Morgan’s data signals are toward gold. As of 2026, the per-ounce price is hovering under the $5,000 benchmark. High-net-worth individuals are now being appreciated as a "portable hedge."
Eventually, heritage pieces (such as 1970s Cartier "London" pieces) are selling for 30% above their high estimates.
Leading Auction Houses for Jewelry
Auction houses are global trendsetters. This rule also applies to red carpet promotions. When you are seeking real market insights before purchasing an investment-grade piece of jewelry, we recommend observing the following:
Sotheby’s (founded in 1744)
They captured the generative AI art before other houses. Their recent record was a $1 million deal exchange of "Machine Hallucinations” by Refik Anadol. Most importantly, Sotheby's now fully supports crypto payments for high-value lots.
Their superior art sense positioned them as the top favorite for the "Silicon Valley" and "Web3" tycoon class. [Sotheby’s 2025 Financial Performance Report]
Christie's (founded in 1744)
They are the prestigious house that sold Leonardo da Vinci’s Salvator Mundi ($450.3M).
Among the other lots, "Magnificent Jewels" (Rockefeller Center) is now the talk of the town. Despite market fluctuation, they owned Gen Z bidders. In November 2025, they hand-passed "The Mellon Blue" diamond (9.51 carats) for $25.5 million. [Global Sales Summary]
Phillips (founded in 1796)
Besides millennials, they successfully captured Gen Z buyers. 50% of their revenue comes from the Gen Z group. Sculptural Gold & Lab-Grown Statements are one of their next auction signatures. [Southern Jewelry News]
Bonhams (founded in 1793, London)
Their Heritage Tech has established a new standard in the investment-grade, resale-value-oriented jewelry industry. During the past 5 years, they expanded aggressively.
Their face value came to light through the 2024 1962 Ferrari 250 GTO deal, which was sold for over $38 million. [Bonhams 1793 Ltd History & Expansions]
The Tiffany & Co. moonstone & the “Enamel necklace" (circa 1915) are likely to be their house special in the upcoming auction season.
Doyle (1962, New York)
Doyle’s “Boston Collects” of February 2006 is something everyone dream for. In late 2025, a 1910 Doyle's Press edition of Shakespeare’s Sonnets was exchanged for $60,800. It was triple its estimated valuation. [Doyle: Rare Books & Autographs]
Their key moments include the estate orchestrating the estates of Gloria Swanson (legendary film star) and Stephen Sondheim (renowned composer and lyricist).
Average Price by Auction House: 2026
It's crucial to understand “hammer price” and the "total premium" if you want to secure your desired ornament. Gen Z bidders are increasingly utilizing mid-market houses.
Auction franchises like Doyle and Bonhams are their ultimate target for high-ROI "signed icons." Meanwhile, many of them show a clear preference for reserving Christie’s and Sotheby’s for "trophy assets."
Auction House |
Average Lot |
Entry-Level "Fine" Range |
High-Value "Important" Range |
Sotheby’s |
$98,000 |
$5,000–$25,000 |
$500,000 – $20M+ |
Christie’s |
$110,000* (Est. Cluster) |
$8,000 – $30,000 |
$1M – $25M+ |
Phillips |
$130,000 (Live) |
$15,000–$40,000 |
$250,000 – $10M+ |
Bonhams |
$25,000–$45,000 |
$2,000 – $15,000 |
$100,000–$1.2 Million |
Doyle |
$15,000 – $35,000 (Est.) |
$1,500 – $10,000 |
$50,000 – $850,000 |
Skinner |
$10,000–$25,000 (Est.) |
$1,000–$8,000 |
$20,000 – $250,000 |
Geographical Auction Trends
In 2025, the Asia Pacific region dominated with exquisite collections and new buyers. The market captured 36.4% to 37.8% of the total market share.
The US auction remained the global trendsetter. In 2025, America alone generated 41% of the worldwide market. Christie’s was the key rule setter of the table.
Premium houses (Cartier and VCA) are outperforming, boasting an 88% sell-through rate. Source: Southern Jewelry News 2026 Trends.
Nearly 26% of US women now prefer self-purchase over gifts. [Icecartel.com]
The US market valuation reached $78.9 billion, mostly driven by "self-purchase" and "investment gifting." The "Fine Jewelry" segment accounts for 80% of net market value. [Source: IMARC Group]
Gen Z bidders are contributing to the rise of the branded jewelry market share. Collection-led designs are getting the closest attention for resale value. [Arizton]
Hairloom cut designs are now getting the most attention due to the Taylor Swift effect.
Source: Southern Jewelry News 2026 Trends.
The following pie chart shows the 2025 regional auction market share:
Jewelry Types & Price Analysis
Raw material and heritage value both matter for spot prices. Craftsmanship and brands also contribute to deciding the “sale rate.” Rare diamonds and high-value necklaces are the peak premiums in this list.
Diamonds
Large diamonds get the best buyer competition drama. Traditionally, the market is separated into type IIa and vividly colored diamonds. Depending on the 4Cs, a 1-carat diamond costs range from $3,850 to $18,200.
On the other hand, rare assets like the Pink Star Diamond ($71.2M) define the investment standard. [Diamondport]
For classic colorless diamond lovers, moissanite can be a more reasonable option. They are identical and hold the best clarity among the other LGDs.
Could be yours: Colorless cushion-cut moissanite engagement rings
Necklaces
Royal collections like Cartier’s Patiala (est. value $2.5 billion) are reserved signatures. Meanwhile, a moissanite or lab-grown gemstone-engraved necklace may range from $1,500 to $5,000.
Rare and colored mined diamonds cost more. Depending on the carat, the price may cross 1-2 million. [Sotheby’s Archive].
Watches & Other Jewelry
In 2026, Gen Z is redefining this segment. Dress watches and rare "statement" pieces priced above $11,000. They are mostly valued for storytelling assets. [Happy Jewelers, Feb 2026].
Conversely, masterpieces like the Chopard 201-Carat Watch ($25M) are once-in-a-lifetime pieces. Considering their resale value, such pricing is worth it for generations. [Sotheby’s]
Investment & Collector Insights
If you have a passion for vintage and historical collections and rare gemstones, particularly auction house sale data, it would benefit you. They signal trendy gems and future ROI insights, which are crucial for investor-oriented collectors.
The market has experienced a distinct "recalibration” since 2024. In some categories, the price dropped by 2.2% in the colorless diamond segment.
Instead of reducing, demand for high jewelry (signed pieces) surged by 2.3%. [Grand View Research]
Let’s take a glance at the past decade's growth comparison:
Comparative Data Table: 2015 vs. 2026 Outlook
Metric |
2015 Benchmark |
2026 Market State |
Growth |
Global Auction Total |
$2.1 Billion |
$3.94 Billion |
+87% Total Growth |
Top Gemstone Value |
$4.0M per carat (Blue Moon) |
$5.5M+ per carat (Estimated 2026) |
+37.5% per carat |
Online Bidding % |
20% of buyers |
81% of bids |
Digital Transformation |
Key Investor Demo |
Boomers / Gen X |
31% Millennials / Gen Z |
Generational Shift |
To ensure transparency, here we catered to three major auction house reports.
Phillips: The Boutique Challenger
Since 2015, they have aggressively expanded the art jewelry section. This elite house stretched its global auction points. If we observe their auction value over the past decade (2015-2025). Surprisingly, they have achieved the highest average lot value in the industry.
Their net value reached approximately $173,000, a benchmark for live auctions.
Phillips saw a meteoric rise from 2021 to 2022. Their net auction worth doubled before stabilizing in 2024.
Their combined jewelry and watch divisions broke all the previous records in 2025. The net auction price crossed the $370 million milestone.
Christie’s: The Heritage Leader
Historically, the house is famous for "mid-high to high jewelry volume." Christie's luxury segment was up 29% in H1 2025 alone.
This elite auction titan grew by 25% in the first half of 2025. [Christie’s H1 2025 Press Release]
Simultaneously, a few pieces of their Kashmir sapphires and emeralds were sold at 3x their estimated value.
Conclusion
If you are considering a high-ROI investment in the world's luxury jewelry market, look for heritage and investment-grade pieces. Emerging Gen Z buyers are playing an important role in this generational shift; brand value is paramount to ensure future release value.
Record-breaking houses like Sotheby’s or Christie’s are still dominating. Their records still support high-end craftsmanship-focused brands like Cartier or Graff. Most importantly, do not forget to have a look at rare-colored gems and unique lab-grown pieces. They hold the potential to fetch you a decent future value if you are a wise selector.
Frequently Asked Questions
Does Historical Value Affect Jewelry Price?
Antique gems over 100 years old with significant historical value are a major price-driving factor. We can take Elizabeth Taylor’s Taj Mahal diamond-engraved necklace as the most recent example.
Which Gems Are Most Valuable?
Red diamonds are the most precious for their rarity ratio. Even a 1-carat red diamond costs more than 1 million dollars.
How Do Auction Prices Compare Globally?
The price range is set based on regional value, economic condition, and, most importantly, the auction structure.
Are Branded Jewelry Pieces Always Worth More?
Carat, cut, clarity, and color are the key factors that decide the price. Meanwhile, luxury brands hold additional status value. A one-carat mermaid-cut white diamond of your local brand would cost 10-30% less than the ones from big names like Cartier or Schiaparelli.