This is a 24 1/2" long 1.5mm rolo design necklace. They are circular links. I have 2 made in this length and they weigh 3.02 g. Only difference is one has a 5mm teardrop lobster claw closure the other has a 6mm round spring closure.
BELCHER CHAIN / ROLO CHAIN: Belcher or rolo chains are a popular variation of a cable chain, with round links that are rounded on the outside and flat on the inside. Sometimes, chains with links that are rounded both on the outside and inside are called rolo chains, as well.
