Frequently Asked Questions
Everything you need to know about your Kosiner Jewelry experience.
What materials are used in Kosiner Jewelry pieces?
We use premium materials including 14k and 18k gold plating over sterling silver, high-grade cubic zirconia, and ethically sourced gemstones to ensure lasting brilliance.
How should I care for my jewelry to prevent tarnishing?
To maintain shine, avoid contact with perfumes, lotions, and water. Store your pieces in the provided Kosiner pouch and wipe them gently with a soft microfiber cloth after use.
How long does shipping take?
Orders are typically processed within 1-2 business days. Standard shipping takes 3-5 business days domestically, while international shipping can take 7-14 business days.
What is your return and exchange policy?
We offer a 30-day return policy for all unworn items in their original packaging. Please note that for hygiene reasons, earrings are final sale unless defective.
Do you offer a warranty on your products?
Yes, every Kosiner Jewelry purchase includes a 1-year limited warranty covering manufacturing defects. This does not cover accidental damage or natural wear and tear.
Can I track my order once it has been placed?
Absolutely. Once your order ships, you will receive a confirmation email containing a tracking number and a link to monitor your delivery status in real-time.