Jewelry & Diamonds
Sell Your Fine Jewelry & Diamonds — Estatebuyer.com
Sell Your Jewelry
Want to sell your jewelry? Looking to upgrade to something new? Estatebuyer.com is the best place to get the highest price for your fine jewelry. We pay premium prices for signed pieces from the world's most prestigious jewelry houses, including:
Tiffany & Co. · Cartier · Van Cleef & Arpels · Graff · Harry Winston · Bvlgari · Mauboussin · Chaumet · Fred · David Webb · Boucheron · Fabergé · and more
We also purchase fine jewelry from every major design period, including:
- 19th Century: Georgian and Victorian jewelry
- Early 20th Century: Edwardian, Art Nouveau, and Art Deco jewelry
- Mid-Century: Retro jewelry from the fabulous 1940s and 1950s
- Modern Era: Contemporary designer and estate jewelry
This list isn't exclusive — whether your pieces are signed or unsigned, don't hesitate to contact us for a free evaluation.
Sell Your Diamonds
Want to sell your diamonds? Considering an upgrade? Estatebuyer.com is the best place to get top value for your diamonds. We buy and sell quality diamonds of all cuts and sizes, evaluated using the industry-standard 4Cs — cut, color, clarity, and carat weight.
Since 1996, Estatebuyer.com has been a worldwide leader in purchasing large, fine diamonds (1.00 carat and larger). We specialize in GIA-certified diamonds and work with clients around the globe who trust our decades of experience.
Our team is knowledgeable, experienced, and professional, and we're committed to providing an outstanding level of service from your first inquiry through final payment.
Why Sell to Estatebuyer.com?
- Nearly 30 years of experience buying fine jewelry and diamonds
- Specialists in GIA-certified stones and signed designer pieces
- Immediate payment through discreet, safe, and professional buying procedures
- No obligation evaluations — signed or unsigned, certified or uncertified, we want to see it
Get Started Today
Contact us today with any of your jewelry or diamond needs. Whether you're selling a single heirloom piece or an entire collection, our team is ready to give you a fair, expert evaluation.
What Makes a Diamond Valuable — And How Lab-Grown Diamonds Are Reshaping the Market
What Determines a Diamond's Value?
Every natural diamond is evaluated using the same universal standard, known as the 4Cs:
- Carat — the diamond's weight. Larger stones are rarer and increase in value exponentially, not just proportionally.
- Cut — how well the diamond is shaped and faceted, which determines its brilliance and sparkle. A well-cut diamond can outperform a larger, poorly cut stone.
- Color — graded on a scale from colorless (most valuable) to noticeably tinted. Colorless and rare fancy-colored diamonds command the highest prices.
- Clarity — the presence (or absence) of internal and external imperfections. Fewer inclusions typically means a higher-value stone.
Beyond the 4Cs, factors like certification (GIA being the gold standard), provenance, and overall rarity all play a role in what a diamond is ultimately worth.
The Diamond Market Has Shifted — Here's Why
If you've heard that diamond prices have dropped, you're not misinformed — it's one of the biggest shifts the industry has seen in decades, and it's almost entirely tied to the rise of lab-grown diamonds.
Lab-grown diamonds are chemically, physically, and optically identical to natural diamonds — the difference is that they're created in a laboratory over weeks rather than formed underground over billions of years. Because they can be manufactured on demand, without the scarcity that defines natural stones, their prices have collapsed:
- Lab-grown diamond prices have fallen roughly 88% since 2020, largely because production capacity scaled far faster than demand, creating a significant oversupply.
- Natural 1-carat diamonds have also declined.
- Lab-grown diamonds have grown from just 5.2% of diamond jewelry sales in 2019 to over 42% of all diamond jewelry sold in 2025.
Why Natural Diamonds Still Hold Long-Term Value
Despite the price correction, natural diamonds retain a fundamental advantage lab-grown stones don't have: genuine rarity. A natural diamond took billions of years to form and can never be mass-produced. Because supply is fixed and finite, well-cut, well-graded natural diamonds — especially larger stones (1.00 carat and above) with strong certification — continue to hold meaningfully more resale value than their lab-grown counterparts, whose prices continue to fall as production technology improves and supply increases.
While lab-grown diamonds typically retain only a small fraction of their original purchase price, natural diamonds generally hold onto a significantly larger share of their value over time.
What This Means If You're Selling
If you own natural diamonds — whether loose stones, estate jewelry, or an inherited piece — this market shift actually works in your favor as a seller. Genuine, certified natural diamonds remain in strong demand precisely because they can't be replicated in a lab. At Estatebuyer.com, we specialize in GIA-certified natural diamonds, 1.00 carat and larger, and our team stays current on market conditions to ensure you get an accurate, competitive offer — not an outdated estimate based on pre-2022 pricing.
