The gold-plate is perfectly preserved, as you can see on the photos. I do not know what the stone is..The item "Old Silver Chain For Pocket Watch (kyustek)" is in sale since Wednesday, April 10, 2019. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Pocket Watches". The seller is "mitakaboy" and is located in European Union, Sofia. This item can be shipped worldwide.