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