This beauty is signed Nestor who was a little known Taller but is known for their own original designs. This necklace was crafted somewhere around the early 50's and is properly hallmarked as shown. 2in. x 2in. is the height and span of the purple stone drop. The Stone is 5/8th in. across and is without chips. The stone is not a color changing synthetic as it stays true in color and with a flood of light shows a pink cast underlying the purple. The silver has a weight of 40 grams as this is an airy design but I can assure you that each element on this necklace is well crafted with thick silver. I have shown in the last picture a Margot de Taxco ring that will be listed soon and is in my inventory. Please inquire. The stones are the same as used in the necklace and is an over all wonderful pairing. A treasure for collectors just, LOOK AT THAT NECKLACE!