Sonia Bitton 14K Solid Yellow Gold 20CT Blue Topaz Brooch. Featuring Sky, Swiss, and London Blue Topaz in Round and Pear Shape. Size: 33mm diameter, 20mm deep. The item "Sonia Bitton 14K Yellow Gold 20 CT Sky Swiss & London Blue Topaz Brooch Pin" is in sale since Friday, February 10, 2017. This item is in the category "Jewelry & Watches\Fine Jewelry\Fine Pins & Brooches\Diamonds & Gemstones".The seller is "juliancoin" and is located in Silver Spring, Maryland. This item can be shipped to United States.