We have an early cuff and earring set that is marked with only Mexico Sterling. The filigree is thick and heavy. The frame going around is firm. The curls are precise and great care was made for the prongs that hold the stone to have the feel for the rest of the design with filigree loops. Leaves with a pretty patina adorn the back of each side. Please ask and I can send pictures of the markings. The gap is 1in. and the height is a huge 2.5in. tall. This is a substantial set weighing 74 grams. The earrings are thick curls as well. They are screw backs and have a height of 1.75in. and at the widest point are 3/8th inch wide. No damage can I find. The onyx is without chips or cracks. This is one of those jewels from the Mexican Silver Renaissance that is unsigned and it simply does not matter. The workmanship and design speak for itself. Fantastic.