three strand faux white pearls with attached rhinestone detail faux brooch . These have a nice heavy weight 179 grams on my kitchen scale which is about 6 ounces however they probably weigh a bit more because I could not get the whole necklace on my scale . the necklace measures about 18" with a three inch extender. The longest length is ~ 15" please see above photos for what was measured .. legnth will vary on individual wearing this pretty necklace . Dress form is a small and the neck measures ~ 15". Lobster claw clasp attaches to the pearl section of the extender . Lots of life in this beauty. I wore this to formal and even at work over a turleneck sweater and under a blazer. Questions are always welcome