This is one on the nicest lavaliers I have owned. It was made in the 1800s and marked 14k. The piece weighs 3.4 grams and measures 2" x 7/8". Bezel set near the bottom is a colorful round natural agate. The stone measures 10.5 mm in diameter. Set in the center of the agate is a .03 ct round European cut natural diamond. Surrounding the agate are many natural gold natural nuggets. The loop at the top can accommodate up to a 3 mm chain. This piece is in excellent condition.