Your jewelry should be exactly what we say it is.
Every Nathalias piece is sold with a clear description of its precious-metal content and product specifications. We stand behind those specifications. If a Nathalias product is found to materially differ from the gold karat or material specifications stated by us at the time of purchase, we will investigate the matter and provide an appropriate resolution under the Nathalias Authenticity Guarantee.

Authenticity you can hold us accountable for.
When we describe a piece as 10K Gold, 14K Gold, or another specified precious-metal standard, that specification forms part of our commitment to you.
Our Authenticity Guarantee covers the material specifications expressly stated by Nathalias on the applicable product listing, purchase documentation, or Product Passport.
Stated Gold Karat
The gold karat stated for your Nathalias jewelry is part of our authenticity commitment.
Examples include:
10K Gold · 14K Gold · 18K Gold
depending on the individual product.
Product Identification
Where available, Nathalias products may be associated with a Product ID / Product Passport containing information such as product description, stated material, karat, weight information and verification records.
Independent Verification
If there is a reasonable question concerning the authenticity or stated precious-metal specification of a product, Nathalias may arrange inspection or testing by an independent qualified laboratory or testing facility where appropriate.
Resolution
If the product is confirmed to materially differ from the precious-metal specification stated by Nathalias at the time of purchase, Nathalias will provide an appropriate remedy, which may include replacement, refund, or another resolution, subject to the terms of this guarantee and applicable law.
A transparent path from concern to resolution.
Contact Nathalias
Provide your order number or proof of purchase, Product ID if available, photographs of the item and a description of your concern.
We review the product record
We review the original product information and the specifications represented at the time of purchase.
Inspection or testing
Where necessary, Nathalias may request that the jewelry be physically inspected or submitted for independent testing.
You receive the result
We communicate the findings and, where a material discrepancy is confirmed, provide the applicable resolution.
WHAT IS COVERED?
The Nathalias Authenticity Guarantee concerns the authenticity and precious-metal specifications expressly stated by Nathalias for the product.
For example:
✓ Gold karat materially differs from the karat stated by Nathalias
✓ Precious-metal composition materially differs from the material represented by Nathalias
✓ A verified product materially differs from the applicable documented product specification