Every item we offer is rigorously inspected by seasoned authenticators with deep expertise in luxury brands. From stitching and hardware to date codes and craftsmanship, our multi-point checks ensure each piece meets brand standards.

We complement expert authentication with AI-powered tools like Entrupy, which uses microscopic analysis and machine learning to verify items with over 99% accuracy. Select items include a certificate of authenticity powered by Entrupy.

We stand behind our pieces. If any item is found to be inauthentic, we offer a 100% money-back guarantee—no expiration.

Our curators verify every item’s origin and condition, ensuring that only pieces in excellent shape—free from damage, repairs, or unpleasant odors—are included in our collection.

With years of experience and global clients, OPAL & ONYX has built a reputation for trust, quality, and impeccable service.