Gold on necklace is looks to be stamped 19k. Comparing to other Elizabeth Locke pieces, that is consistent. I was told the stone is Amethyst however I believe it is a Blue Topaz or Aquamarine.
I'm not 100% sure. Total length of necklace is 42. Beads are on the smaller size and have a light blue coloring. I'll be taking these to a jeweler to get more info about the pieces so I can have better answers and validate stone types ect. The item "Elizabeth Locke 19k Gold Earring and Necklace Set Blue Topaz Aquamarine Big Baby" is in sale since Friday, September 18, 2020.
This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "seekclassics" and is located in Lake Oswego, Oregon. This item can be shipped to United States.