Necklace extends from 16 to 18 inches on a fine chain. The cubic flashes as it moves in a special setting that allows it to "dance". it is an eye catching necklace because of this flash. Diamond is April's birthstone but in silver jewelry the cubic is substituted for a diamond. The cubic is manmade and much more durable and expensive than crystal. At www.therocks.ca our cubic jewelry is top quality with the rhodium finish just like white gold has. Our designs are right on trend with famous houses of jewelry worldwide and they look the same as something that cost thousands. So, enjoy!