Legal notice

Last updated: September 19, 2026

Website Operator

otzera.com is owned and operated by:

Otzera LLC
An Illinois limited liability company
5 S Wabash Ave, Suite 315
Chicago, Illinois 60603
United States

Contact

Email: hello@otzera.com
Telephone: +1 (815) 454-4599

Business Information

Legal name: Otzera LLC
Trade name: Otzera
Legal form: Limited liability company organized under the laws of the State of Illinois
Sales tax: Otzera LLC collects sales tax where required by law, including in Illinois.

Formal Legal Notices

Formal legal notices to Otzera LLC must be sent in writing to the address above, Attention: Legal, with a copy by email to hello@otzera.com. Notices of a dispute must follow the procedure in Section 22 of our Terms of Service.

Responsibility for Content

Otzera LLC is responsible for the content of this website. Gemstone descriptions, Otzera 50 ratings, and collector commentary are Otzera’s professional opinions. They are not appraisals, insurance valuations, or financial or investment advice. See our Terms of Service for details.

Trademarks and Copyright

Otzera, the Otzera 50, O50, and the Otzera Passport names and logos are trademarks of Otzera LLC. All website content, including photographs, videos, text, graphics, and the presentation of Otzera Passport records, is protected by copyright and may not be reproduced for commercial purposes without our written permission.

The names of gemological laboratories and other third parties referenced on this website belong to their respective owners. Their mention does not imply any affiliation with or endorsement of Otzera.

External Links

This website may link to third-party websites, including gemological laboratories and carriers. Otzera LLC does not control and is not responsible for the content or practices of those websites.