hanadama, I used 1.5mm 14k gold oval link chain (I buy it by the foot). The pearl stations are wire wrapped onto the chain, and the gemstone stations are attached using 2mm 22 gauge 14k jump rings (made them myself!) The jump rings are just closed and not soldered...they seem pretty sturdy and can withstand a tug (did a test). I am always hesitant to solder the jump rings because 1) I don't really solder; and 2) I am always fearful that if I were to catch the necklace on something, the chain would break and be more expensive to replace than a jump ring.