The Saint Jeanne chain.
It is the shortest, 15 in. of length, it is a simple and elegant convict mesh. It is in Gold filled, perfect to be worn like a crewneck, and also ideal for younger girls.
The Saint Elizabeth chain.
It is the intermediary size, 16,5 in. of length in convict mesh. It has a small peculiarity, an alternation of small golden beads which makes me think of a rosary. These beads don't prevent the medallion rings to go through. It is in 3microns gold-plated brass, which is a very good plating quality.
The Saint Therese chain
It is the longest, 20,5 in. in curb chain. We find here a reference to the rosary with finer beads. It is perfect to be worn in winter below a sweater, or in a sautoir spirit (I recommend it for example for the infinite medallion). It is also in gold filled.
It is always advised to take off gold plated jewels during makeup time in order not to alter the gold plating and prolong the beautiful shine.