This lovely necklace is Victorian Revival in design. There is engraved detail in every part of it. The main links are crescent shaped with a floral design. Inside each crescent is a rectangular piece with a very delicate design. Now look at the chain links. They have a very feminine shape and also a detail on each side. This necklace was made by Karu. According to Illusion Jewels' Researching Costume Jewelry they were in business from 1940's into the 1970's. It looks like Karu was their earliest mark so I would say this is probably from the 1940's. Necklace is about 14 3/4" long and just under 3/4" wide. It has a fold-over clasp. This is a quality piece of jewelry - you will love the weight of it. It is possible to add a little chain to each side to extend the length. I have vintage chain and would be happy to do that for you. An extender is also an option. Necklace is beautiful and unusual and in excellent condition.