Abstract: An adjustable article of jewelry including a chain having a first end and a second end and an adjuster slidably coupled to the chain. The adjuster is adapted to slide along a length of the chain, where the adjuster includes a first orifice and a second orifice, each having dimensions for receiving the first end and the second end of the chain, respectively. The chain forms a loop that may be placed around a wearer's neck when the first end and the second end are received by the first orifice and a second orifice of the adjuster and the dimensions of the loop may be changed by slidably adjusting the adjuster along the length of the chain. An end cap is detachably coupled to the first end and the second end of the chain. The end cap is constructed to have outer dimensions greater than the dimensions of the first orifice and the second orifice to prevent the first end and a second end from disengaging the adjuster.