Contact us

Although we are a working production facility and have no retail storefront, we welcome visitors during business hours. Contact us to tour our innovative manufacturing facility.

Zina Kao Exclusives

6050 Lowell Street, Suite #115
Oakland, CA 94608
888.91nothing4.4685 (phnoneone)

Returns & Exchanges

Please contact us in the unlikely event that your order arrives damaged or is not what you expected.

We accept returns and exchanges on all items except for personalized pieces - this includes any initials, engravings or birthstones.

You have two weeks from the day the package was shipped to return your items. Returns must have a note stating the reason for the return/exchange and be in new condition as well as accompanied by the original packaging. In the case of a refund, note we do not refund your shipping costs.

Frequently asked questions

I lost an earring - can i get another one?

We can make a single earring for you. Please send us the single earring for us to match. We charge just for the single earring, shipping and any applicable sales tax.

What about repairs?

We are happy to repair or replace your jewelry for you for a small fee. Please contact us to find out more.

Can you recreate a style in 14kt gold?

Sorry, not at this time.

Do you have sample sales?

Yes! We have sample sales in our Emeryville studios periodically throughout the year with our largest sales happening during the holidays. Send us your contact information, and we'll let you know.

What is your jewelry made of?

Almost everything we make is sterling silver, or 23kt gold over sterling. Chains and earwires are either sterling silver or 14kt gold-fill. The black charms and findings are sterling silver oxidized to a heavy black, then covered in a protective wax. Lockets, dogtags and selected small charms are plated brass. If you have a specific question on materials, please contact us.

Please note that our black items are a patina, not a paint. It will wear over time, creating a special high-low finish unique to you and your wear patterns.

For customers with metal allergies: like all plated items, our gold charms have a small amount of nickel under the 23kt gold covering.

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