Louis XV Blue Topaz Cache Pendant (18.52 Carat). Whole pendant is 9, gem is 1/2 wide, 3/4 tall and a little more than 1/4 deep. The item "Louis XV Blue Topaz Cache Pendant (18.52 Carat) And Diamond Necklace" is in sale since Monday, April 20, 2020.This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Necklaces & Pendants\Gemstone". The seller is "therukes" and is located in Los Angeles, California. This item can be shipped to United States.