<human>:  I want to start a collection of vintage jewelry. What tips do you have to ensure I find authentic items?
<bot>: 
1. Start by researching the different types of vintage jewelry available in your area. Knowing what to look for will help you find authentic items.
2. Familiarize yourself with the styles and designs of vintage jewelry to help you identify potential pieces.
3. Buy from recognized dealers and also from independent estate sales.
4. Look for signs of wear and tear as well as any imperfections that can help you determine the age and authenticity of a piece of jewelry.
5. Learn about the metals and stones used in vintage jewelry and the techniques used to craft these items.
6. Verify the quality of the items you purchase with third parties such as jewelers, appraisers or historians.
7. Maintain appropriate documentation such as receipts and any certifications to help prove authenticity.
8. With each item, consider asking the seller to provide information about its history and origin.