This is a genuine Native American jewelry necklace top. The hallmark "JVT" and the artist's name are clearly engraved. Below are the approximate measurements, taken by an amateur: Length: Approximately 5cm Width: Approximately 4.5cm Length including the bale: Approximately 7cm Bale hole: Approximately 1.8cm That's all. Above all, this is a large, eye-catching Naja-type necklace top. The impact of the nugget-shaped turquoise in the center is, of course, striking, and it's a luxurious design with turquoise used on both the left and right sides as well. The bale is also large, so you can easily thread it onto extra-large Native American jewelry bead necklaces, as well as very thick silver chains. I've owned this, matching it with my own necklace chains, but I haven't worn it outside in the past year because I felt it was too precious. I've been displaying it indoors as a complete piece of art. I wiped it down with an alcohol wipe before listing it, but I haven't polished it with a silver cloth because I think it looks better to leave the tarnish on Native American jewelry. It's very easy to polish, so you can polish it to your liking... Personally, I recommend leaving it as is, as the heavy, tarnished silver look matches the size perfectly. Naja necklaces this huge are truly rare. For those looking for one, how about it? Thank you.