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Catalog

One of One Customized Experience

"Your Vision, Our Craftsmanship—One-on-One Design Sessions Available."

Explore Jewelery

Designed and Located in New York City

Designed and Located in New York City

Designed and Located in New York City

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Book Your One-on-One Styling Session

Book Consultation

The Company

Generations of Fine Jewelry, Now Custom Made for Yours


GMI Boutique is a family-run fine jewelry house with deep roots in New York’s Diamond District. For generations, we’ve crafted timeless diamond pieces for leading retailers—carrying our legacy of craftsmanship into every design.

Our Story

Explore Our Collection

Elevated Essentials: Fine Jewelry with a Designer’s Touch.

  • Our engagement rings blend timeless craftsmanship with modern New York design. Each piece is crafted to celebrate love with bold, refined style.
  • Our wedding bands are designed to pair perfectly with our engagement rings—crafted with precision, comfort, and lasting style. Timeless, elegant, and made to be worn every day.
  • Our diamond earrings are designed for effortless elegance—crafted with precision, sparkle, and everyday luxury in mind. From classic studs to statement styles, each pair reflects our heritage of fine jewelry.
  • Our diamond necklaces are the perfect balance of sophistication and shine—crafted to elevate any look. From delicate pendants to bold statement pieces, each design reflects our legacy of timeless style.
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Discover Our Collections

Collections to Adore

Cassidy Diamonds Collection

The Cassidy Diamond Collection features natural diamonds set in refined, fashion-forward designs. Crafted in 18K gold and made in New York, each piece reflects timeless luxury and everyday elegance.

Lab Grown Diamond Collection 4


Our Lab Grown Diamond Collection features certified diamonds in E-F color and VS clarity—offering exceptional quality without compromise. Every piece is designed with the same craftsmanship and elegance as our natural collection, for a modern, ethical choice in fine jewelry.

Bridal Collection

Our Bridal Collection is crafted to celebrate every love story—featuring engagement rings and wedding bands designed to sit perfectly together. Made in New York with exceptional diamonds and timeless style.

Made & Designed in New York

Every Piece Crafted and assembled in New York City

An Original Diamond Company

Premium Fine Jewelry and Diamonds Without The Markup

Lifetime Care and Service

We offer Lifetime Warranty on any damaged piece and yearly quality service checkups on all pieces

Certified Gemologists

Receive an appraisal with every purchase when requested

Meet Our GMI Boutique Couples