Frequently Asked Questions
Everything you need to know about your Kosiner Jewelry experience.
What materials are used in Kosiner Jewelry pieces?
We use high-quality materials including 14k and 18k gold plating over sterling silver, genuine gemstones, and ethically sourced diamonds to ensure lasting brilliance and durability.
How should I care for my jewelry to maintain its shine?
To preserve your jewelry, avoid contact with perfumes, lotions, and water. Store your pieces in a cool, dry place, preferably in the Kosiner pouch provided, and clean gently with a soft microfiber cloth.
What is your shipping policy and delivery timeline?
We offer free standard shipping on all orders over $75. Domestic orders typically arrive within 3-5 business days, while international shipping may take 7-14 business days depending on the destination.
Can I return or exchange my purchase?
Yes, we offer a 30-day return and exchange policy for all unworn items in their original packaging. Please note that for hygiene reasons, earrings are final sale unless defective.
Does Kosiner Jewelry offer a warranty?
Every purchase is backed by our 12-month manufacturer warranty, which covers any defects in materials or craftsmanship. This does not cover normal wear and tear or accidental damage.
Are your gemstones ethically sourced?
Absolutely. At Kosiner Jewelry, we are committed to ethical sourcing and work exclusively with suppliers who adhere to the Kimberley Process and fair labor standards.