Gorgeous vintage 18k yellow gold amethyst circle pin brooch. Richly saturated vibrant purple round faceted amethysts each measure 7mm x 4mm (.93 carat each, 7.44 carat total weight. Measures 1-3/16" in diameter and weighs 6.5 grams. Hallmarked "18K" on the inside tang of the fold over safety clasp. The construction of the pin would make the VERY easy to convert to a necklace by simply adding a bail at the top. In excellent very well babied condition, a vintage estate piece, mid century 1950-1960. Amethyst is the birthstone for the month of February.