This 14k rose gold necklace with octagon blue topaz is cut perfectly to show off the beauty of the vivid birthstone of December. Any woman born in any month will love the sparkle that this necklace produces. The octagon shape is amazing for showing off the facets and deep color of the stone, with seven full carats that sparkle beautifully. The four pronged pendant and 18 inch rope chain are made of your choice of solid 14k yellow, white, or rose gold to suit your own personal style. This necklace is a simple style combined with an elegantly cut gem that makes it positively stunning.