Giving new life to antique, vintage and modern diamonds

How I May Help You...

3 Carat G, Flawless Old European Cut

Cutting Diamonds in America

I specialize in restoring, refashioning and reselling of antique, vintage, and modern diamonds - unleashing the inherent beauty in all styles.


Whether you want to beautify the diamond you own, trade it, sell it or make a unique new purchase - you deserve a master cutter's expert touch and guidance. Please contact me. 

All cutting is done in my workshop - never overseas.

American Rose Brilliant -Black & White

The American Rose Brilliant

My signature cut is the American Rose Brilliant.  Uniting two traditions - the artistry of a classic antique rose cut crown, and a highly reflective modern pavilion - this style outperforms standard rounds.

Rough diamonds are not readily available to artisan cutters. For this reason, "estate" diamonds are my basic raw material. These Old Mine and Old European diamonds entered America in the pre-WWII era.  

Sourced, designed, cut and available exclusively in the USA.

Maarten de Witte - American Diamond Cutter

Meet the American Diamond Cutter

My name is Maarten de Witte, aka the Diamond Wizard.  I have 45 years experience as a master diamond cutter in the USA, and was formerly Director of the American School of Diamond Cutting.  I'm a craftsman, innovator and teacher - in fine cutting, design, branding, sales, research and development.  

I view the world of diamonds through a work-hardened lens. My scope spans from the solitary workbench to the frontiers of cyberspace.  I'm dedicated to preserving excellence in the American diamond trade.


With Aleah from Jewelers Helping Jewelers

An impromptu video at the Chicago Responsible Jewelers Conference - October 2018

American Rose Brilliant

Pre- WWII Old European Cut diamond re-purposed as an American Rose Brilliant.

As Seen Through My Loupe...

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Maarten de Witte

P.O. Box 934, Urbana, IL 61801

(707) 953-8845