Certified Loose Diamonds
GIA and IGI graded stones across the full range of shapes and sizes, with the certificate available before you commit.
Five80 Crown
Stones sourced properly. Priced honestly.
A wholesale diamond house on Fifth Avenue, supplying retailers, designers and trade buyers with certified stones and straight answers.
Start a ConversationAbout Us
The wholesale diamond trade runs on relationships and reputation, and both are earned slowly. A supplier who overstates a stone's colour once is a supplier you check forever afterwards.
Five80 Crown operates from 580 Fifth Avenue on that understanding. Yossi Paris built the business around straightforward dealing: stones described as they actually grade, certificates provided up front, and a plain answer when we don't have what you need.
We supply independent retailers, bench jewellers and designers across the New York metro area and further afield. We are wholesale only — we don't sell to the public, and we don't compete with the customers we supply.
Our Expertise
Six areas where we do our most useful work for New York businesses.
Calibrated Melee
Consistent small goods supplied to specification — matched for colour and cut so your production runs don't stall.
Custom Sourcing
Specific requests located through our network, with realistic timelines and no pressure to accept a near-match.
Trade Memo
Stones on consignment for established accounts, so you can show a client the real thing before money moves.
Recut & Repolish
Assessment and coordination of recutting where a stone's yield or grade can genuinely be improved.
Appraisal Support
Independent valuation input for insurance, estate and resale purposes, documented for third-party review.
Our Approach
- Certificate firstYou see the grading report before any conversation about price.
- Described as it gradesNo optimistic colour calls, no borderline clarity stated as the better grade.
- Wholesale onlyWe don't sell retail, so we're never competing with our own customers.
- A straight noIf we can't source what you need at a sensible price, we say so rather than substituting.
Contact Us
Tell us what you're weighing up. We'll reply within one business day.