OPENING THE BOOK…

FIFTY-EIGHT FACETS
ONE DIRECTORY.

The round brilliant took three hundred years to get right.
The list of people who can sell you one properly took us rather less.

Every one of 1,407 listings checked against more than one source

1,407 listings · NYC + 11 international markets · updated August 2026

Round brilliant diamond
Round brilliant
Fifty-eight facets, cut to return light
The markets
1,407
Verified listings
Unique records across 12 markets
● live — recomputed from the data
12
Markets
NYC + 11 international hubs
● live — recomputed from the data
33,000
District workforce
NYC Diamond District only
◆ sourced — 47th Street BID, 2026
$24B
Traded a year
≈$400M a day on the block
◆ sourced — 47th Street BID, 2026
0 shown

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Ask the directory

Answered out of the loaded listings — no external lookup, so nothing here is invented.

Where the trade sits

Diamond Wholesalers & Dealers

Importers, cutters and bourse members

Fine Jewellery Showrooms & Manufacturers

Retail and wholesale, finished pieces

Bespoke Design, Setting & Master Manufacturing

Ateliers, CAD, master setters

Bridal & Engagement Collections

Engagement, bands, full bridal

Gold, Silver & Precious Metals Exchange

Buyers, refiners, bullion

Luxury Timepieces & Master Watchmakers

Authorised dealers, vintage, service

Talk to the desk

Corrections, a listing we have missed, a shop that has closed, or a sourcing question you would rather ask a person. We answer within a business day.

The block
W 47th St between Fifth & Sixth, New York

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