Jewelry for
every chapter.
Natural and lab-grown diamonds, fine jewelry, and custom pieces—personally curated to help you find something beautiful, meaningful, and entirely your own.
Luxury should feel personal.
DiamondBrokerUSA pairs access to an extensive selection of diamonds and jewelry with one-on-one guidance. Whether you know exactly what you want or need help narrowing it down, Mark can curate options around your style, priorities, and budget.
Imagine it.
We’ll make it yours.
Have an inspiration photo, a design in mind, or simply an idea? We offer custom jewelry and full custom manufacturing so your piece can be created around your vision rather than limited to what is already in a case.
From idea to jewelry box.
A straightforward, personal buying experience from the first conversation through delivery.
Connect
Call, text, or email Mark to get started.
Share
Tell us your style, preferences, occasion, and budget.
Curate
Review diamond and jewelry options selected for you.
Approve
Select your piece or approve the custom design.
Enjoy
Receive your jewelry with fully insured shipping.
Find your kind of brilliance.
Begin with a category, then let us help curate the details—from diamond shape and setting to metal, size, and finishing touches.
THE COLLECTION
Engagement Rings
Find a setting that feels unmistakably yours.
THE COLLECTION
Diamond Studs
Everyday brilliance, selected for balance and beauty.
THE COLLECTION
Tennis Bracelets
A timeless line of light for every occasion.
THE COLLECTION
Wedding Bands
Classic and modern bands for your next chapter.
THE COLLECTION
Necklaces
Refined diamond pieces designed to be worn often.
THE COLLECTION
Loose Diamonds
Natural and lab-grown options curated around your priorities.Made to be noticed.
A glimpse of the styles, details, and diamond looks that can inspire your next piece.
Mark Kozin
Diamond Broker • DiamondBrokerUSA
Let’s find your next piece.
Whether you’re shopping for a milestone, upgrading an everyday favorite, searching for a loose diamond, or creating something custom, Mark can help you explore the right options.