Metal: 14K 585 solid yellow Gold Marks/Stamps:  None, custom made, tested as 14K by RS Mizar   Size: about 5 Weight: 4.26 grams   Front Dimensions: about 12 mm/0.47" along a finger    Natural Amethyst: Stunning color, emerald cut, measured as setting permits 12 x 10 x 5.5 mm   Condition: Great Vintage,  no abuse