Our Authentification Guarantee

Pottery

If you are looking to have a Thermoluminescence test performed, Minerva Gallery can help with the whole process. A TL test can help with the authentication of pottery items and give the date the item was last fired. By no means is a TL test the only method needed for authentication of an item. Sometimes certain pieces will show clear identifiers of age such as manganese deposits or root marks, so it is not always necessary to TL test all items. If you have any questions on authenticity please contact us so we can answer any questions or doubts you may have.

Minerva Gallery works together with Ralf Kotalla in Germany to provide you with all the steps to get you the final results for any items that need to be TL tested. If you are interested in getting your item(s) tested please contact us for pricing and additional information on how to proceed.

Stone

Each piece is expertly authenticated and comes with a certificate of Authenticity. Just as the collector, we hold a zero-tolerance policy for forgeries, and promise to uphold safe, responsible, and honest trading policies. We also offer a Lifetime Guarantee on Authenticity. 

Important and high-end pieces will also come with a second authentication from a laboratory. They analyze the material by using a Scanning electron microscope (SEM). If you have any further questions please contact us and we will be happy to help.