This is a vintage 14K yellow and white gold ladies ring with a large oval faceted amethyst surrounded by round brilliant and baguette cut diamonds. The diamonds are VS/SI in clarity and GH in color.
The ring is a size 7.25 US. It weighs 8.9g. The ring face is 21.5 x 18.7mm. The amethyst is 15 x 13 x 7.8mm. The total estimated amethyst carat weight is 10.33tcw. The round brilliant cut diamonds are each about 2.5mm. The baguette cut diamonds are each about 3 x 2.1-1.3mm.