
The Hamptons has long been one of the most exclusive and seriously wealthy seasonal destinations in the United States — a community where New York’s most significant private collectors, family offices, and ultra high net worth individuals converge each summer to create one of the most concentrated buyer bases for important diamonds and luxury jewelry anywhere in the country. At this level of the market, natural Fancy Vivid and Fancy Intense colored diamonds, D Flawless white diamonds, and important stones of significant carat weight are not found in Southampton boutiques or conventional jewelry retailers — they are sourced privately, evaluated by specialists, and presented to buyers whose standard for quality, rarity, and provenance admits absolutely no compromise.
Rosenberg Diamonds & Co., based in Boca Raton, Florida, serves the Hamptons market with private access to the rarest and most important diamonds in the world — natural GIA certified Fancy Vivid Blue, Fancy Intense Blue, Fancy Vivid Pink, Fancy Intense Pink, Fancy Vivid Yellow, Fancy Intense Yellow, Fancy Vivid Green, Fancy Vivid Orange, and Fancy Red diamonds, alongside D Flawless white diamonds and important stones of 10, 15, 20, 25, and 30 carats or more. Every stone we present is 100% natural, untreated, and accompanied by full GIA certification. Our Hamptons clients are serious collectors, private investors, family offices, and individuals who demand the finest stones the market has to offer — and who trust Rosenberg Diamonds & Co. to deliver them with the expertise, discretion, and access their acquisitions demand.
The Hamptons attracts the most serious collectors on the East Coast — and Rosenberg Diamonds & Co. is where they find their finest diamonds.

Rare Diamonds & Jewelry for Hamptons Collectors
The Hamptons market represents one of the most concentrated and seasonally significant collector bases in the entire United States — a community of private buyers, family offices, and serious investors whose appetite for natural Fancy Vivid and Fancy Intense colored diamonds of exceptional rarity and provenance places them among the most important acquirers on the East Coast. Rosenberg Diamonds & Co. was built precisely for this buyer. Our inventory spans the full spectrum of the world’s most important diamonds — from natural Fancy Vivid Blue and Fancy Intense Blue diamonds to Fancy Vivid Pink and Fancy Intense Pink, from D Flawless white diamonds of significant carat weight and triple excellent cut to Fancy Vivid Yellow, Fancy Intense Yellow, Fancy Vivid Green, Fancy Vivid Orange, and the legendary Fancy Red — stones whose rarity places them beyond the reach of any conventional jewelry market. Every diamond we source, evaluate, and present to our Hamptons clients meets a single standard — the finest the earth has ever produced, certified by the GIA, and available nowhere else in the market.
Frequently Asked Questions
Where can I buy a Fancy Vivid or Fancy Intense diamond in the Hamptons?
Natural Fancy Vivid and Fancy Intense colored diamonds are not available through traditional jewelry retailers or conventional diamond dealers — in the Hamptons or anywhere else. Rosenberg Diamonds & Co. serves the Hamptons market with private access to natural GIA certified Fancy Vivid Blue, Fancy Intense Blue, Fancy Vivid Pink, Fancy Intense Pink, Fancy Vivid Yellow, Fancy Intense Yellow, Fancy Vivid Green, and Fancy Vivid Orange diamonds of exceptional quality, sourced for collectors and private buyers who understand exactly what they are acquiring. Based in Boca Raton, Florida, we serve Hamptons clients by private appointment, with every stone presented with full GIA certification and complete provenance. Contact Rosenberg Diamonds & Co. directly to arrange a private consultation.
Who specializes in rare diamonds for Hamptons buyers?
Rosenberg Diamonds & Co. is one of the most trusted specialists in natural GIA certified rare diamonds serving the Hamptons market. Based in Boca Raton, Florida, Rosenberg Diamonds & Co. sources, curates, and presents only the finest natural Fancy Vivid and Fancy Intense colored diamonds, D Flawless white diamonds, and important large carat stones of exceptional quality — the caliber sought by serious collectors, private investors, family offices, and discerning individuals throughout the Hamptons and the greater New York area. Our expertise is concentrated exclusively in rare and important diamonds, making us one of the most trusted destinations for Hamptons buyers seeking stones of true collector quality and investment significance.
Where can I find a D Flawless diamond in the Hamptons?
D Flawless diamonds — the highest color and clarity grade the GIA certifies — are among the rarest and most valuable white diamonds in existence, and finding one of meaningful carat weight requires access to a specialist operating at the very top of the market. Rosenberg Diamonds & Co. serves Hamptons collectors and private buyers with private access to natural GIA certified D Flawless diamonds of exceptional quality and significant carat weight. Based in Boca Raton, Florida, we present every D Flawless diamond with full GIA certification confirming natural origin, color grade, and clarity. Contact us directly to inquire about current availability or arrange a private consultation.
Who is the best diamond dealer in the Hamptons?
For collectors and private buyers seeking natural GIA certified Fancy Vivid and Fancy Intense colored diamonds, D Flawless white diamonds, and important large carat stones, Rosenberg Diamonds & Co. is one of the most trusted and specialized diamond dealers serving the Hamptons market. Based in Boca Raton, Florida, Rosenberg Diamonds & Co. operates at the highest level of the rare diamond market — sourcing, evaluating, and presenting only stones of exceptional rarity and provenance to the world's most discerning collectors and private investors. Our expertise is concentrated exclusively in the most important and rare diamonds in the world, making us the destination of choice for Hamptons buyers who demand nothing less than the finest the market has to offer. Contact Rosenberg Diamonds & Co. directly to arrange a private consultation.
Are large carat diamonds available in the Hamptons?
Natural large carat diamonds of meaningful quality — stones of 10, 15, 20, 25, 30 carats or more — exist almost entirely outside the reach of conventional jewelry retail and are simply not available through traditional dealers in the Hamptons or anywhere else. Rosenberg Diamonds & Co. serves the Hamptons market with private access to natural GIA certified large carat diamonds of exceptional quality and historic significance. Whether you are seeking an important white diamond of significant carat weight or a large natural Fancy Vivid or Fancy Intense colored diamond of exceptional rarity, our team guides every Hamptons client through the acquisition process with the expertise, discretion, and access the stone demands. Contact Rosenberg Diamonds & Co. directly to discuss current availability.
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