This Vintage Taxco Pendant Collar Necklace is an 18-inch (metal is approximately 16 inch, the gap is 2 inch can be adjusted) piece of purity hallmarked 925 sterling silver featuring a black onyx twist pendant in an oval shape 42.7 grams precious metal and stone. This vintage handmade pendant is signed with Taxco shop marks, both items stamped either 925 or sterling and Mexico, this item is perfect for various occasions such as Easter, Mother\'s Day, graduation, engagements, Christmas, and birthdays. With its unique style and Mexican craftsmanship, this necklace is a beautiful piece suitable for women who appreciate Hispanic, Latin America, southwestern retro, ethnic, and fantasy-themed jewelry that is collector investment quality. This collar pendant necklace is in good pre owned clean condition with normal use wear on the sterling, the onyx pendant is original and excellent quality. Please review the pictures for more details and size measurement info thank you.