Spinelli Kilcollin x HOORSENBUHS® "Microdame" stacked ring Features three linked HOORSENBUHS® Microdame and SK bands 18-karat yellow gold, 18-karat rose gold, and .925 sterling silver 0.6mm HOORSENBUHS® Microdame band 3.8mm gauge .925 sterling silver band 4.0mm HOORSENBUHS® Microdame band Professional cleaning recommended Made in USA