Margot von Voorheis Carr designed this pre-Columbian double swirl and her taller Margot de Taxco created this absolute to die for necklace. It is so beautiful it was chosen as the COVER DESIGN for the book WILLIAM SPRATLING AND THE MEXICAN SILVER RENAISSANCE by Penney C. Morrill. Definitely a favorite of mine being 1 14/16th wide (for all intent and purpose you can call it 2 inches wide) and 20in. long. The actual wearable size due to its width is a comfortable 17in. The presence displayed is simply breathtaking and none other succeeds quite like the repousse large balls in the center and the hand chased swirls of thick almost pure silver. It is riveted for strength and the condition is nothing less than outstanding. The weight of this beauty is 238 grams yet it sits evenly on the neck and you do not know it is even on. Properly hallmarked as shown and collector/museum quality. The pictures cannot capture how fantastic this piece is, just LOOK AT THAT NECKLACE!