The pendant is marked 14k and is solid yellow gold. It weighs 7.4 grams and measures 1" x 3/4". Set in the center is a cab natural tanzanite that measures 17mm x 13mm x 6.7mm which makes it approx 10.5 cts. It does have flaws but it has a nice overall look. The tanzanite is surrounded by 41 round brilliant cut natural diamonds. They have an approx total weight of 1.00 cts. The diamonds range from VS2 to SI1 and G to H in color. It has a small loop at the top that will accommodate up to a 2.5 mm chain.