Colorful Oval Cut Crystal Pendant With 16? Sterling Silver 925 Snake Chain. This will be the most colorful crystal pendant you will see today. The depth and brilliance in the colors are incredible. Sadly, we can find no makers mark or and marks for that matter. What we have done is added a 16? sterling silver (marked 925) snake chain because they go very well together. Using Google Lens, we matched it with Swarovski, Mystic Quartz, La vie Parisienne and Marianna Sun Kissed something or another getting different result each time based on reflection of light. So nothing definitive other than we know the chain is sterling silver. See photos and if you do know what it is and would like to let us know, we will confirm and change and happily give you credit. All we do know is that this is the very definition of a ?head turner.? It?s absolutely gorgeous if you like vivid colored crystal. Will ship USPS first class with tracking to winning buyer