Buying and Caring for Your Antique and Vintage Jewelry I wanted to pass along tidbits picked up from my readings and conversations with other dealers. I hope there's information here you'll find useful - whether you're newly interested in jewelry or an old hand. Buying Cleaning Gemcuts Married Pieces, Repairs & Reproductions Tests to Determine Material Email if you find this info useful or if you have suggestions on topics you'd like to see added. jthomas@jantiques.com